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A Drunken Vow

by Megapone

Chapters

Prologue: The Night Before

"And he did what?"

A crash.

"He went right up to her—the boss's wife—and—and—"

Another crash, followed by a chorus of boos and cheers.

"—and asked her if she wanted to see a real stallion!"

"What'd she do then?"

There was a pregnant pause.

"She slapped his face and beat his ass so hard that his dick was coming out of his ears!"

A loud whoop, and the sound of splintering wood. A wave of laughter went up around the room, and the bartender immediately started handing out refills.

Horizon grinned lopsidedly as he held out his mug for a refill of cider. The warm, sweet liquid trickling down into his cup was music to his ears. A crowd of stallions had gathered around his friend Blaze, who'd since collapsed on the wreckage of the table he'd broken, and were doing their best to help him to his hooves. He watched with some amusement as the crimson-red pegasus shoved their hooves away, snoring loudly with his wings jutting out straight away from his body.

He lifted his mug in a toast—to what, he wasn't quite sure—and cheered with the rest of them as the froth spilled over the sides. He took a big gulp, the grin on his face growing even wider.

It was the height of the apple-picking season, and thanks to his magic and the new horde of farmhooves, they'd gotten a bigger crop this year than ever before. As if reading his mind, a field worker—he could almost remember her name, but not quite—raised her glass, with cider froth around her lips. "To Horizon's "Grow Me Up" spell," she cheered, her voice slurring, "And the stir-strongest crop of cider we've ever had!"

"Hear, hear!" the rest of the room cheered. Horizon grinned stupidly as a few nearby ponies punched him on the shoulder—some leaving halfhearted bruises, and others accidentally spilling cider on his coat—and took another sip of his cider.

His ears perked up at a growing murmur going around the room. From the few words he could make out in his drunken haze, the others had found something new to gossip about. He found out exactly what, though, when the head farm assistant—Plowshare, a bulky earth pony—put one hoof up on his barstool and thrust his pelvis out to the rest of the room, a crazed look in his eyes.

"I bet I've got a bigger dick than the rest of you little pussies put together!"

A chorus of boos, hisses, and outright laughter came in reply, and soon enough, Plow had been mobbed by at least a half-dozen other stallions insisting that there was no way he was bigger than them.

Horizon watched the growing mob with a stupid grin on his face, his mug of cider hanging lopsidedly from his hoof. The alcohol in his system gave him a pleasant sort of buzz, filling his head with a cloud of haze that seemed both soft and comfortable. It looked that this year's crop of apple cider had been more potent than anypony'd expected; sure enough, dicks were being rolled out from their sheathes and laid out on stools for all to see. One farmpony whooped as he thrust his erect, eight-inch cock into the air; another batted him aside to proudly display his own nine-inch dick. A few others were quickly pushed aside, their five or six-inchers clearly not enough for this battle of testosterone.

Finally, Plow let out a low, deep bellow and shoved the others out of the way. "What'd I tell you?" he rumbled, a smug look on his face. "You little fillies have nothing on me. Take a look at this!"

The room went silent as he stood back and let his own stallionhood flop out into view. Twelve-and-a-half inches of long, thick cock stood straight up into the air, bobbing up and down ever so slightly. A sneer spread across Plow's face, and he pounded a hoof against the closest table. "Who here can top that?"

"I can!"

All eyes sped toward Horizon as he stood up from his table and set down his mug. It landed on its edge and spilled over the side, precious cider falling onto the muddy bar floor. But he didn't care—he had eyes for one pony, and one pony only.

Plow's sneer deepened as he watch Horizon walk, doing his best to swagger across the room (and bumping into only the occasional chair or table). "Horizon," he said, in a deep voice. "So nice of you to join the big boys. What've you got for Show and Tell?"

Horizon took a moment to look out over the crowd before answering. He raised his eyebrows and gave a little shrug. "I don't know. Just a little something I like to call—my dick!" With a flourish of his hooves, he flung himself off the ground, intending to balance on his hindlegs—and overbalanced, falling back instead and hitting the ground with a thump.

The room went quiet again, but not out of fear of injury. No: Horizon's dick had managed to pop free of its sheath and was currently laying across his stomach. All twelve inches of its glory were on full display, its head stretching up to his chest—and still flaccid.

Plow took a step back, looking somewhat confused. "Yeah—well," he grunted, looking around. "So you're a shower. Still don't come close to this stallion's girth!" He let out a loud, wordless jeer, gesturing down toward his own, throbbing cock.

"Oh?" Horizon raised an eyebrow and hiccuped. "You think this is small?" He blinked a few times, the alcohol buzz helping to get rid of the pain from falling over. He smiled. "Maybe it is. Let's see how big I really am."

Plow and a few others let out disbelieving snorts as Horizon leaned forward and shuffled himself back until his back was against the bar. Slowly, deliberately, he started to stroke the side of his stallionhood, the wide veins like textured ridges beneath the touch of his hoof.

The onlookers let out a series of gasps as Horizon's cock hardened, rising up past the thirteen—and soon fourteen, and even fifteen—inch marks. Up and down his hooves went, curling around its sides and teasing the tip until it passed seventeen inches. Nineteen. Twenty.

It felt like all of his blood was rushing through his cock. Horizon felt momentarily lightheaded before realizing that it was just the alcohol talking. He kept stroking and even gave it a little lick along the side—making sure to keep eye contact with Plow and the others while he did so. His flanks gave a little wiggle as the illusion spell he'd placed over his soccerball-sized testicles faded away automatically with the onset of an erection, at least a gallon of cum filling their huge, swollen depths.

Finally, as his dick stopped growing, he planted a little kiss on its tip, pulled his hooves back, and looked Plow right in the eye.

"Beat that," he said.

The entire bar watched with voyeuristic glee—one stallion even fainted—as Plowshare watched Horizon's dick bob and sway in the air: all twenty-four inches of it.

Two feet of stallionhood, and with balls to match.

"I—uh—er," Plow stammered, his eyes wide and almost fearful. His smirk contorted into a vacant, empty stare.

"Damn, son," somepony said from the crowd. A hum of agreement went up around him; a few even let out high-pitched whistles. "That's gonna split somepony in half."

"Well?" Horizon asked, cocking his head. He flashed his teeth. "Do I win?"

"Hey!"

The whole crowd did a double take as Blaze jerked up from his place on the ground, his flanks still resting on the ruins of the table he'd been standing on. His cheeks were red—even redder than usual—and flushed with the dozen or so mugs of alcohol he'd had tonight.

"You think you're better than us, buddy?" he snarled. "Huh, Mr. Long Dick?"

"Maybe." Horizon did his best to look smug, though the end result, with his nerves not responding quite the way he wanted to, looked more like a grimace.

"Well, then!" Blaze scrunched up his snout and jabbed a hoof toward him. "If you're so good, I'll bet you get more action than all of us combined. Or maybe not?"

"Yeah!" Horizon blurted. Conveniently, the fact that he'd only ever had sex three times prior, seemed to disappear from his mind. "You've got no idea how much!"

"Then prove it!" Blaze held up his hoof. "I challenge you to hit up half the eligible ponies on the farm—in three weeks."

There came a collection of gasps. Horizon merely narrowed his eyes, the pleasant buzz enhanced into a euphoric roar in his ears. His dick throbbed mightily, his testicles resting halfway on his legs, and for a moment he felt like there was nothing he couldn't do. "Oh, yeah? I'll do it in two!"

"It's on?"

"It's on!"

Glaring at each other, Horizon and Blaze each spit into their hooves, held them out, and shook. A ragged chorus of cheers went up from the crowd.

"Another round!" Horizon called out, his hoof waggling his two-foot dick in front of Blaze's face. "On me!"

This time, the cheer was even louder. Blaze grunted at him, and Horizon snorted right back.

By the time he'd had his second mug of cider—his ninth that night—Horizon was out like a light. Half the rest of the farmhands were, too; the bar was filled with passed-out, three-times drunk stallions and mares alike.

By the time he woke up the next morning, Horizon's gigantic boner was gone, and with it the pleasant buzz of alcohol that had filled his mind.

What hadn't disappeared, though, was the hangover, as well as the uneasy feeling that something was wrong; something was off.

He sat up off the floor, his head feeling like somepony had taken a mallet to it, and blinked three times.

Two weeks.

"Aw, shit."

Chapter 1: A Scientific Study [M/F] [Hyper Cock]

"Hey! Get your flank off the floor—I need to clean it."

Horizon jumped at the sudden, harsh voice ringing in his ears. He groaned as it bounced around his head, and let out a sharp yelp as something whipped past the edge of his ear.

The bartender glared down at him, a broom hovering at his side. "Get up, I said. And put your shit away—nobody needs to see that."

Horizon felt a strange weight on his flank and his eyes drifted down past his chest and stomach. He let out another muffled yelp as he noticed his swollen, soccerball sized testicles resting in between his legs, displaying themselves for the world to see. His cheeks instantly flushed a deeper red than any he'd seen before, and magic buzzed on the edge of his horn as he did his best to reactive that illusion spell that covered them.

Once. Twice. Finally, on the third try, and panting heavily, Horizon watched the spell pass over his oversized nuts, concealing them from view. The bartender gave a grunt of affirmation and prodded him with the edge of his broom again.

"Well? Get moving. I don't have all day—I've gotta have this shack ready again by tonight, especially after all the damage you louts did."

Horizon didn't waste any time in quickly bobbing his head and galloping out of the building. The door was—thankfully—open. A shrill ringing sound still seemed to echo between his ears, and his engorged balls—though invisible to the eye—smacked against the sides of his flanks as he ran.

It was a nice day outside, which was a welcome surprise given the fact that they'd been expecting the temperatures to drop off shortly after harvest time. He probably would have appreciated it more had a miniature pony not currently been working inside of his head, smashing against his eardrums with a hammer with each step he took. Finally, he came to a stop, groaning quietly and hanging his head.

"Hey! You!"

He blinked and swallowed, trying to moisten his too-dry throat as he turned to the side. A mare was trotting up to him, a little smile on her face. Her mane, a bright green color, bounced around her neck.

"Remember me?" she asked with a grin. He nearly shook his head but then paused. She looked familiar...

His eyes widened. Yup; she was the same farmpony who'd toasted him last night in the bar. Instantly, his cheeks colored an even deeper red than before, and she let out a loud, throaty laugh.

"Guess you're just coming out of the cider now, huh?" she asked. He grunted quietly and inclined his head, not wanting to hurt his head any more. "Where's your house?"

He made a vague gesture off back toward the farm. She quirked an eyebrow.

"Is it far?"

He gave a halfhearted shrug.

With a snort, she took him by the hoof. "Come on, then," she said. "I'll take you to my place to get you washed up. I'm in town. Nopony deserves to go all that way on a hangover that bad."

Horizon let out a sigh as the water splashed against his face. "Ugh..."

"Better?" The mare looked at him from the doorway of her bathroom.

He nodded. "Definitely." The cool tap water felt refreshing as it ran down his face, and he could already feel the vestiges of his hangover disappearing. The pain reliever and crackers she'd given him had helped too; before, his stomach had felt ready to burst, but now he felt much more clearheaded.

Clearheaded enough to remember—

Aw, crap.

"So you work on the farm, right?" The mare trotted up to him, a towel slung over her shoulder. She held it out to him, and he took it gladly, his magic picking it up and rubbing it across his face to absorb the leftover moisture.

"Yeah," he said. "You look familiar, too. You're—"

"—an agricultural technician." At his slightly bewildered expression, she grinned, shrugging. "Farm scientist, basically. I make sure that everything goes smoothly when planning out which crops to put where, and which can get the best nutrients."

"Oh." He swallowed, dabbing against his forehead as the last vestiges of his hangover trickled away. "Right. I knew I'd seen you around, especially before planting season."

"And I know who you are," she said, her eyebrows rising up into her forehead. "Horizon the Farmpony, the stallion whose special spell has made him the talk of every produce marketer in Fillydelphia."

He chuckled. "You did seem to notice that last night."

An odd look seemed to cross her face. "I did?"

"Yup."

"Huh." She put a hoof to her chin, and slowly, a strange gleam seemed to appear in her eyes. "That's not all I noticed, though."

His eyes flashed down to the floor before hers did, but when he looked back up, there was laughter in her eyes, as well as something else. He licked his lips.

"Uh—yeah. Right." He chuckled, the blush on his face stretching across his full snout. "I guess I was pretty drunk, huh?"

"You definitely were." There was a faraway quality to her voice, as though she wasn't quite listening. Suddenly, she asked, "Tell me—does it hurt?"

He blinked. "Huh?"

"Your, uh, thing." She made a vague sort of gesture toward his back legs, and the heat on his cheeks increased in intensity. "Y'know; when it comes out. All that blood flow."

"Oh! I mean—no; not really." He bit his lips, his eyes flickering from side to side. Anywhere but into her face. "It just feels...really good, actually."

"Sorry," she said quickly. "I didn't mean to make you feel uncomfortable."

"No, no." He shook his head quickly. "I don't want to be rude—you did let me into your house to clean up, after all. It's just a bit...awkward."

"Of course. Maybe we should go to another topic?"

Before he could reply, the mare took a step toward him and took the towel in her own hoof. "You missed a spot," she murmured, and dabbed at a place just beneath his ear.

"So," she went on, "How about that bet, huh?"

He almost groaned, caught himself, and then groaned anyway. "Dammit. That. I've gone and screwed myself over with that one."

"Really?"

"Yup." He closed his eyes. "Blaze is never gonna let it go. There's no way I'll be able to—uh—do that enough times to fulfill it. I probably shouldn't have drunk so much last night."

"Oh, I wouldn't be so sure."

He blinked. "Huh?"

There was a sly sort of smile on the mare's face as she leaned in closer to him until her lips were just barely approaching his ear. "I think you'll have an easier time than you think," she murmured.

A shiver ran down his spine.

She pulled back, the towel coming with her before she dropped it onto the bathroom counter. "Tell you what," she said, that odd gleam in her eyes again. "What with me letting you in here to get rid of that hangover, how about you do me a little favor?"

"What?" His reply came almost a bit too quickly, and Horizon gulped as the look in her eye intensified.

"Well," she said, almost in a singsong voice. "You must know that I'm a biologist of sorts—I study life of all kinds, not just plants. So maybe it would do me and my studies some good to take a look at your little friend down there"—she winked—"and do a bit of...observation." She cleared her throat. "For science, of course."

"Uh," Horizon stammered. "F-for science?" His cheeks felt like they were on fire.

She pursed her lips and nodded. "For science," she echoed.

"Well," Horizon said, swallowing again and trying to keep his voice steady. "If you're—well, if you're really sure, then I can't see the harm in it, I guess."

A wide grin spread across the mare's face, and she clapped her hooves together. "Excellent. I'll show you to the bedroom so that we can get you in the proper scientific posture—it's right this way."

Before she could lead him all the way out, though, he stopped in place, a frown on his face. "What's your name, anyway?"

"Chestnut," she said, and pulled him through the doorway.

Her bedroom was fairly unassuming, which Horizon could have guessed from that fact that she appeared to live alone. A few ribbons dotted the walls, most commonly mounted next to cutouts of newspaper articles or diplomas. When she spotted him eyeing one in particular, she let out a quick chuckle and shook her head.

"Certificate of membership for the Journal of Agricultural Sciences," she said. She nudged him toward the bed—twin sized, with an olive green blanket pulled over it. "Now let's get you set up."

Horizon didn't protest as she pushed him back onto the bed. He took a seat on the side, his legs dangling over and his forehooves keeping him upright. She frowned as she glanced over his underside; it was barer than a patch of stone. "What's going on here?"

Cautiously, she reached down to poke at his stomach—and her hoof stopped in midair, meeting some resistance. She quirked an eyebrow and moved her hoof lower; before she could make her way through his legs, it made contact with what felt like smooth, taut skin. Horizon shuddered slightly, a small feeling of pleasure running through his body at her touch.

"I—uh, use a vanishing spell to hide it when I'm out in public." He grinned sheepishly, watching the look on her face. "Here: let me take it off for you." He screwed his eyes shut and a flicker of green light appeared on the tip of his horn.

By the small "o" that her mouth made, and the way that her eyebrows climbed up into her forehead, he could tell that she was impressed.

Her accidental stroking had evidently left him feeling more than slightly stimulated; his flaccid footlong was out of its sheath and resting quietly against his stomach. His balls, made visible with the release of his spell, sat heavily between his legs, forcing them apart by about an inch. Her hoof, which had been resting on the surface of his right nut, quickly drew back, and she flushed.

"Whoops," she said, coughing off to the side. "I...wasn't expecting that." She cleared her throat. "Mind if I take a closer look?"

He shook his head mutely.

She leaned in closer, watching with what looked like rapt fascination as his stallionhood raised itself into the air. Blood pumping through engorged veins filled its thick circumference, shooting it up in the air like the raising of a flag. Like he always did upon seeing his new endowment, a small, unconscious smirk rose on his face. Other stallions talked about having their cocks at "full mast;" if anything, he had a full skyscraper sitting between his legs.

Up and up it rose, higher into the air. Chestnut's chin slowly rose up alongside it, her eyebrows looking as though they were about to shoot off of her forehead out of sheer disbelief. Horizon let out a soft moan, involuntarily running his hoof across the wide, mushroom-shaped head as it reached fifteen inches in length; it quickly surpassed that, reaching eighteen and then twenty. The width bulked up too until it was as long across as two of his hooves put together, a throbbing mass of warm, pony flesh. It felt heavy against his chest, standing straight up into the air as his balls, recognizing the familiar sensation of an erection, sloshed eagerly with their stores full of cum. He flexed his crotch, his dick poking up half an inch higher into the air as it tensed, finally reaching its full height of two whopping feet.

"Well," Chestnut said. Horizon looked down at her; she was kneeling below the bed, looking up at his towering cock.

She licked her lips. "That's…impressive. More than impressive, really."

"Heh."

"Tell me." She tilted her head to the side and ran her hoof down half of his dick's length; he shivered in pleasure. "How have you dealt with this…titan all your life? Puberty must have been hell for you, I'd imagine, especially before you could come up with that vanishing spell."

"Actually," he said, "it's only been like this for a little while. A little over a month, really."

She blinked, looking at him in confusion. He watched as understanding dawned over her eyes. "Ah." The corner of her mouth curled up into a grin. "Your spell."

"Exactly."

Chestnut shook her head, chuckling under her breath. "I've got to say, then," she murmured, "it looks like you've really hit the jackpot as far as special talents go."

Horizon felt a swell of pride—as well as a swelling somewhere else, his cock seeming to stand up even straighter under her watchful and analytical eye. As he watched, though, something else entered into her face: something that he'd gotten better at recognizing in the past month. Hunger.

"Yeah." He grinned sheepishly. "It started off as a paltry seven inches until I got the bright idea one night to make it bigger. I had no idea it'd grow this much, though."

"Fascinating," Chestnut breathed. Her warm, moist breath wrapped around the base of his package, warming his ballsack and increasing the bloodflow by a minute amount. "I can't help but wonder why the difference of effect between plant and animal biology would be so…pronounced."

Her hoof wavering in the air, she slowly leaned in closer, her lips parted. Before Horizon could react, her tongue was out, held delicately between her teeth, and dragging up the length of his cock. He moaned softly, his hips thrusting reflexively into the air.

"You liked that, hm?" She looked back up at him and smirked. "Let's try another trial." This time, her tongue was wetter, the feeling stronger as she moved her mouth up and around his tower of a deck. Her tongue lapped up against veins full of pumping blood, running across in a wave pattern as she made her way up toward his engorged mushroom head. Finally, she reached the top and placed a delicate kiss on its tip.

Again, involuntarily, Horizon's hips pulsed outward as he let out a moan of pleasure. This time, though, his hooves came off of the sides of the bed, presumably to stroke his stallion hood on their own—and he lost his balance. With a grunt, he came tumbling over the side of the bed and onto Chestnut's front, pinning her to the ground beneath his enormous dick.

"Oh, my gosh." His eyes were wide. "I'm so sorry; I—"

"Oh, my," she breathed. She squirmed beneath his weight, her soft tummy rubbing against his throbbing member. They'd landed facing opposite directions—she was facing the bed, staring up at the ceiling, while his back hooves rested on the ground on either side of her face, his horn pointed toward the door. "You—your—" She sucked in a deep breath and then let it out in a slow hiss. "Oooohhhhh…"

Horizon blinked, and then gasped. Without his noticing, his forehoof had landed in between Chestnut's flanks, spreading them wide. Its edge just barely brushed against her taint, and from the way that she was squirming against his dick, it was clear that she was enjoying it. Hesitantly, cautiously, he moved his hoof down between her cheeks until the edge of his leg was brushing against her lips.

She moaned again. "Don't stop—do it again." Not wanting to upset her, Horizon complied. His hoof rubbed up and down the edges of her labia, working its way across her folds. She moved beneath him and he moaned in return; the ripple of her muscle and skin beneath him molded almost perfectly against his giant cock, the pressure on it increasing as she thrust her hips toward his head.

Without knowing why, exactly, Horizon bent down, his mouth held slightly open. He'd never done this himself, but he'd heard of other stallions doing it to mares, and he thought he might as well give it a try. Tentatively, his tongue flickered out of his mouth and brushed against her nethers.

The effect was immediate. She opened one eye and cracked a smile toward him, though the shudder that passed through (which he guessed—or at least hoped—was pleasure) told him that he'd had the desired effect. "Keep going," she murmured, and ran a hoof down the side of his cock that was still exposed to air.

Horizon didn't even hesitate. He bent his head down and worked his tongue deeper into her, flicking the organ ever so often to one side or the other. He touched soft, moist flesh inside, his snout pressing her exposed skin down as his tongue lapped eagerly at her marehood.

He withdrew and she moaned in evident displeasure as his tongue flicked and teased against her lips. He tasted something wet against his mouth and took a slow, long lick against her labia to fully taste the warm, sweet flavor of her juices.

She let out a grunt, her hoof rubbing in small, taut circles across his cock, and he dove back in with gusto, using his tongue, lip and hooves to play, taunt, and pleasure her into cumming.

After only fifteen seconds more, she let out a sharp, muffled cry, her back arching beneath him and driving his cock even further into the soft flesh of her stomach. Cum dribbled from her marehood and onto the carpet below, moist and shining in the lamplight overhead.

"Have you been with a mare since your…change?" she breathed, her hoof tracing down the side of his flanks. He turned back toward her and, mutely, shook his head.

Without inviting argument, she pushed him off of her, his dick bobbing up and down in the cool air, and shoved him onto the bed. He landed on his back, his cock standing straight up in the air and his balls hanging down between his legs. Cum and lust churned in their depths, and he moaned as his cock seemed to throb with a steady beat.

"Well, then," she whispered, pushing him back down onto the bed and narrowing her eyes. "We should do a test run, then. Just to make sure everything is in…working order."

"For science?" he gasped, just barely managing to make out the words in his haze of lust and pleasure.

"For science." Her mouth quirked to the side in a cheeky grin, which soon vanished as a reflection of pure lust rippled into her eyes. She hopped up onto the bed, straddling his huge testicles as his dick throbbed appreciatively.

Getting onto his cock, though, was a bit more difficult than they'd expected. Quickly, though—driven by need, rather than just interest—they managed to bring the tip of his wide, mushroom head against the lips of her marehood. She let out a quiet moan as it penetrated her, just the head managing to spread her legs wider than either of them had expected.

Slowly, not wanting to hurt her—he wasn't sure of what his equipment was capable of—Horizon let Chestnut lower herself down onto his cock. His eyes flickered shut, his teeth biting his lip as her moist, wetted lips managed to slip past the entirety of the head, descending over all four inches.

"Oh," she sighed, "That feels—"

"—Good?" he grunted, barely managing to keep a hold of coherent thought.

"Incredible," she replied. She lowered herself a little further and let out a little squeak as his cock stopped in place, seven inches into her. "Amazing. Simply…prodigious."

She squirmed a bit on top, the extra stimulation of her tight lips wrapped around her head sending pulses of electricity shooting through Horizon's spine. "We can stop there," he mumbled, watching her eyelids flutter. "You don't have to take too much, if you don't think you can."

"No—no!" Her voice came out harsh; demanding, even. A sheepish smile flickered across her face as she glanced down at him, still sitting, for all intents and purposes, with her flanks spread wide across the top of his enormous stallionhood. "I can keep going. Just—just one moment."

She slowly pushed herself up so that only three inches were left inside of her; the rest slide free with a wet-sounding schlick. Her hooves rested on his giant, taut balls, the seed within swirling and screaming at her touch. Then, without warning, she let herself drop back down.

Horizon gaped as she slid down a full half of his cock, effectively impaling herself on twelve inches of his cock. "Are you sure," he grunted, "that you can take it?"

She sneered. "This is nothing."

She moved her marehood up and down the length of his cock a few times, her moist folds surrounding and teasing his fat member. He moaned in blind pleasure—the tightness was almost too much. He could almost see a small bump moving beneath her stomach, poking against the flesh of her abdomen and actually bowing out of her vaginal cavity.

She let herself drop again, and this time, managed to take a full eighteen inches.

Horizon's eyes rolled back into his head, and from her startled, aroused gasp, he imagined that she was doing the same. This was way behind intense. This pleasure was something he'd never dreamed of. Her hooves put extra pressure on his full, heavy balls as her marehood clenched tight around a foot and a half of his throbbing, blood-filled dick. Her warm, wet walls pressed against the sides, licking against his veins and skin as she slowly moved herself up and down his length.

"Oh," she moaned, her eyes rolling back. "That'll be my cervix."

His eyes widened. "Is that—is that bad?"

"Not—not at all." She grunted, her flesh pounding against his as she forced herself to take more and more of his cock. Without even realizing it, the horn on Horizon's head lit up with a cool, green light, a thin stream of magic running through his body and enhancing the electric feeling. The same aura appeared around Chestnut's lips, soon spreading to the entirety of her taint. Eighteen inches became nineteen, soon growing into twenty as the full mushroom head of his cock bulged clearly from her stomach. Soon, only the wide, two-inch band at the base of his cock was left, the rest of her body simply speared on his massive rod.

There—he felt it now, the familiar tension building inside of his massive balls. He could feel his seed churning within them, warm and heavy, waiting to be let out. Her own folds became wetter, her grunts of pleasure mixed with moans of pain as she pumped herself up and down on top of his cock. The tension became electric, filling the entirety of his body as though holding back an avalanche behind a paltry, insufficient dam. His every limb tensed, his cock pulsing and throbbing with need and pleasure as he plunged its full, enormous length into her again and again.

With a primal shout, he threw his head back as she did the same, the tension simply exploding from between his legs. His seed, having waited long enough to be freed, burst from its dam and into Chestnut's vaginal cavity. This was no mere squirt of cum—this was a flood, echoed by a similar stream of juices (though one which in no way could compare, by volume, at least) from her own orgasm.

He grunted and yelled with each thrust of his hips, his wide, churning balls pumping load after load of warm spunk into her, filling her up with his seed. Her head bent back until her hooves were spread wide in the air, a bestial moan of need and pleasure the only thing coming from her throat. Already, her stomach was expanding outward with the sheer volume of cum that he was putting out, her belly expanding with each successive throb of his member. The moment seemed to go on for hours, their hips rolling and bucking as quarts of cum flooded into her marehood, filling her up until there was no room left, and then flooding out from her lips when it became clear that his seed couldn't be contained.

Eventually, the flood of cum slowed, soon coming to a mere dribble that trickled out of her and onto the sheets. The pounding of hot, sweaty flesh slowed as well, and Chestnut collapsed onto Horizon's chest, her eyes looking straight into his as a haze of pleasure floated across them, his shrunken balls padding beneath her weight.

"That was..." she panted. Her body pressed against his, his now-limp cock sliding free of her marehood. Her eyes flickered toward his, wide and dilated. "That was..."

"Too much?" he offered, panting as well. All of the blood was rushing back to his head, the pleasure fading, but leaving behind a pleasant afterglow that seemed to fill every vein in his body.

She stared at him for a moment, as if unsure of what to say, and then burst out laughing. "No," she said, in between wheezes. "That was perfect."

He grinned up at her. He felt oddly small, with his stallionhood now deflated, his balls emptied of their hordes of cum, but the pleasant haze that filled his mind more than made up for. "It was amazing," he agreed.

Chestnut gave him a goofy grin, her eyebrows arched high into her forehead. "You used your little spell thingy on me, didn't you?" Her voice was accusatory, but playful.

"I...well." Horizon coughed, and then gave her a sheepish smile. "I might've. Just to make things easier on you."

"Well, thanks to you, I'm looser than ever." She reached down and gave her marehood's lips a little slap. "I may need a wheelchair for weeks after this, but feel free to hit me up whenever you're in the mood."

"For more research?"

He caught her eye, and she smirked back at him.

"For more research."

Chapter 2: Helping the Milkmare [M/F] [Hyper Cock] [Breast Expansion] [Hyper Breasts] [Bukkake]

It was nearly half past one by the time Horizon finally set himself back on the road toward the farm. The sun was high in the sky, though the heat was slightly mitigated by the thin chill in the air. He hummed as he walked, his hidden package slapping against the sides of his flanks with each step he took.

Post-coitus (as she'd called it), Chestnut had offered to take him out to lunch, rather than sending him back to work with an empty stomach. He'd happily accepted, and as they chowed down on a pair of daisy sandwiches, she'd wondered aloud what kind of research could be done on his growth spell.

He'd never really thought about it, to be honest. The more excited she became, though, the more he realized that she saw a lot more potential here than he (apparently) did. Growth on command, she'd suggested. Complete control over the size of bodily organs; if there was a way to make something bigger, than you could make it smaller again, which would make potential sizes even larger than his own much easier to manage. He'd nearly choked at the idea of having a dick longer than his own two feet, but he had to admit, the idea did sound somewhat tempting. And never having to worry about covering up again? Sign me up!

All she needed, Chestnut had told him, was a collection of samples of plant (and, if possible, animal) life that he'd affected with his magic. So, upon passing through the fence that marked the boundary of Cherry Dun Acres, Horizon made sure to look around for any promising vegetation that he could send to her. He didn't want just to pick something at random, though—he wanted to send her the right fruit (or vegetable).

So it was that he found himself wandering around the big red barn that formed the centerpiece of the farm, standing tall just beside the two grain silos. He was frowning at a "small" pumpkin patch that he'd been monitoring for a few weeks (small being relative when each pumpkin is as large as your torso) when he heard a shrill whistle off to his right.

"Hey there! Mind coming on over and lendin' me a hoof?"

He blinked, his head whirling to the side. He recognized the source of the voice almost instantly: Peachy Sweet, the milkmare in charge of the animals' care at the farm. He tilted his head as she waved in his direction, the straw hat on her head sitting lopsidedly over her mane.

"Sure!" he called back, trotting over. "What'd you need help with?"

Peachy made a face, rolling her eyes before sticking out her tongue. "Well, today was gonna be Milking Day, but the whole team went 'n got themselves high-stinkin' drunk last night. I would've rescheduled, but some of the cows—Marie especially—say they don't got time to wait, and all my usual help is too hungover to do shit." She looked him up and down and pursed her lips. "If you've got the time, I'd be mighty appreciative if you'd help me out."

"No problem." Horizon grinned. "I don't know that much about milking cows, though, so you'll have to teach me."

"'Course. Come right this way, partner."

He followed her through the wide, red doors that opened up into the interior of the barn. His hoof-falls were soft against the padded hay that made up much of the floor, and the air smelt of a thick, earthy musk. Peachy gave him a wink and a chuckle as his eyes widened at the smell. "You ain't used to the barnyard smell, huh? Well, don't worry—I don't think Marie and the girls will be offended or none. You'll get used to it."

"Er, sorry," he coughed. She threw back her head and snorted.

"You'll get used to it," she repeated. "Now come along—the girls're in the back." She paused. "You're Horizon, right?"

"Yup. Peachy?"

"Bingo." They passed the pigpen; several of its occupants gave them friendly waves as they trotted past. The cows' stalls were placed all the way near the back of the building, with giant bales of hay stacked outside each one. Horizon watched as Peachy walked up to one and got up on her hind legs, peering over the edge of the stall door.

"Come on, Marie. It's milkin' time!"

"Oh, thank heavens." The new voice was low and melodious, ringing with a deeper tone. A matronly-looking cow poked her head out from over the stall and smiled down at the two of them. "I've been feeling so sore, darling."

"Ain't no worries, Missus Moo." Peachy winked and dropped down from the door, taking a step back and slinging an arm around Horizon's shoulder. "This lil' guy right here's offered to help me out, so we'll get that taken care for you in a jiffy."

"Thank you, dearie," Marie the cow said, turning her smile toward Horizon. "I really do appreciate it."

A few minutes later, the two of them were in the stall, ready to get to work.

"This here's the bucket we'll be using." Peachy held up an aluminum bucket in between her teeth, making sure Horizon saw it before setting it back down. "And then just in case we need another one, there's the backup bucket over there." She gestured over her shoulder, Horizon following her gaze. "And a backup backup bucket, too."

Peachy smoothed down her clean blue apron and pushed the bucket beneath Marie's body with a nudge of her hoof. "So here's the lowdown: Missus Moo, like all the rest of the cows here, need to get milked pretty regularly. Otherwise, it all builds up and it gets plumb nasty to carry it around all day. Can you guess what our job is?"

"To...milk them?"

"Bingo." She gave Horizon a wink. "Now let me show you just how to do it.

"You gotta hold your hooves right here, right by the udder." Horizon stared at the low-hanging, fleshy organ hanging down from the cow's stomach. Peachy coughed, and he quickly moved his hooves in line with hers. "Each cow has about five to eight of these little nipples, and right now, they're all swollen with milk."

Horizon was almost glad that she was staring down at her hooves, and so missed the light blush on his face.

"So we put our bucket underneath," she gestured toward the bucket sitting underneath the udder, "and hold our hooves so that both are pressed up against one of the nipples. And then—we squeeze."

Sure enough, as her hooves came together to press against the udder, a thin stream of milk began to leak from the nipple's surface. Horizon watched as her hooves twisted, pressing harder against the sides. The stream became a thick, strong current of creamy white liquid, shooting down into the bucket below. Marie gave an audible sigh, a dreamy look in her eyes.

"That feels much better already dears. Please, keep going."

"Will do, Missus M." Peachy turned and gave Horizon a cheeky look as she removed her hooves and then replaced them on the top, dragging them down to squeeze every last bit of milk from the pink, fleshy nipples. "You gotta wring these guys out—go all the way. Pressure, squeeze, and pull 'till you've got everything out."

She grinned. "Now you try."

Horizon grinned in return, though somewhat more nervously than she had. "I'll give it my best shot."

His first attempt resulted in the milk spraying his face, Peachy Sweet guffawing as he wiped thick, warm cream away from his eyes. His second attempt ended up leaking the milk somewhere along the floor, wetting the hay, but definitively missing the bucket. Finally, by his third try, he managed to get a weak trickle of milk into the bucket. His tongue was held between his teeth as he watched the liquid fall, his eyebrows lowered in concentration.

"Not bad," Peachy said appraisingly. "How's that feel?"

Marie sighed again, picking up her hooves to shift her weight. "Much better. Thank you, darling."

It took the pair another ten minutes to finish milking her. From there, they split up to cover the rest. There were fifteen cows in the barn, all loudly complaining about their sore udders. Horizon managed to do five on his own, filling several buckets with warm cream, before he finally caught up with Peachy on the last one.

"Good work so far, partner." She shot him a grin as they both knelt down beneath Shelly's udder. "I might have to call you back to help out again sometime. Princess knows you're harder workin' than most of the other louts I have to deal with."

"Thanks." Horizon smiled back as he reached out to put his hooves around the swollen nipples. It didn't feel quite so awkward a process anymore, though it was still a bit odd.

His ears perked up as he heard a low "baa" sound. He peeked underneath Shelly's stomach and blinked in Peachy's direction; she was scowling at a fluffy sheep, holding one hoof up in the air.

"Now, I told you already, mister—no snacks after lunchtime!" She waggled her hoof, scowling up at the sheep, who let out a weak-sounding "baa" in response. "Now git' going—we got work to do."

The sheep baa'd again before frowning, his shoulders coming up in a halfway shrug. "Ah, well," he said in a shrill voice. "It was worth a try."

Horizon chuckled as the sheep trotted away, and Peachy turned back to him with one eyebrow raised. "So I heard some mighty interesting things by the feedin' troughs this morning," she said as they began to milk, the liquid splashing down into the buckets.

"Oh?" Horizon replied, somewhat distracted.

"Yup. Something about the bar last night, and a little bit of fun that you and some other guys had."

He blinked.

She leaned in underneath the cow's stomach and grinned up at him. "I heard about some pretty big things, too, if you know what I mean."

Horizon gulped, doing his best to keep an innocent grin on his face. "Oh," he murmured, though his heart started to beat a little faster. "That's interesting."

The two fell silent as they continued milking. Finally, after a few more minutes, the last nipple wrung dry. "You're all done, Shelly."

"Oh, thank you, dears." The cow smiled down at the two of them. "We really cannot appreciate it enough."

"No problem." With a twist of her hoof, Peachy gave her a light smack on the rump, winking when the cow turned to glare at her. "Would you mind taking the girls out to pasture for the afternoon? Me 'n this guy here want a little alone time to, ah, clean out the barn."

Shelly clucked her tongue against the roof of her mouth. "Why, of course. I believe the West Field was full of some lovely-looking daisies; we can go there." She pushed open the door to her stall and let out a high-pitched whistle, trotting down the lane of the barn. "Girls! We're heading out to pasture—please form an orderly line."

"So," Horizon said, licking his lips as the cows' galloping faded into the distance, the barn doors slamming shut behind them. "You wanted to, uh, ask me about something?"

"Why, to take a little look myself, hun." Peachy's voice was a bit deeper now, a bit more sultry, and Horizon's throat got a little drier as she took a step toward him. "You know what I'm talking about, right?"

"Erm—yes, I think." Inside Horizon's head, his thoughts were spinning. Holy crap—twice in one day? And I didn't even have to do anything! At this rate...I wonder if I won't win this challenge after all. He grinned sheepishly. "You want to see it?"

She nodded empathically. Somewhat reluctantly, he sat back on his milking stool, closed his eyes, and removed the vanishing spell.

She gave a visible start as his two, massive balls emerged from thin air, their weighty masses sitting heavily between his flanks. The giant, now visible, lump against his stomach swelled as he began to stroke it, emerging from its sheath as twelve inches of flaccid pony meat.

There was a definite hunger in her eyes as it stood up higher and higher—fifteen inches. Eighteen inches—twenty inches, each vein on its side throbbing with blood and power. His balls churned with seed, eager to be released from their stasis, but he managed to bite down on their drive momentarily. Horizon let a small grin onto his face as all twenty-four inches stood up proud and tall, bobbing gently in the warm, musky air of the stall.

"Damn." Peachy Sweet's voice was quiet, almost reverent. She let out a long, low whistle, her eyebrows moving up higher into her forehead as evident desire swirled in her eyes. "That's damn impressive." Her eyes didn't budge from its wide, throbbing surface, the tip flaring out into a huge, mushroom-shaped head at the top. A vision flashed across Horizon's mind—his huge stallionhood, penetrating her marehood, driving up through her pussy and poking out of her stomach as he filled her with warm, sticky cum—

He shook his head, giving a weak chuckle as he cleared his head. "It's actually not natural. I used a spell on it to make it that big, but—"

"Wait." Peachy held up a hoof. Her eyes looked as wide as saucers. "You used a spell?"

"Yup."

"On that?"

"Mmhm."

"A growth kinda spell to make it bigger?"

"Yeah."

"What size was it before?"

"Seven inches."

She whistled again, but not before a light red blush covered her bright pink face. "I—wow. Shake my stars, but that's mighty incredible to look at." She licked her lips. "Mind if I touch it?"

He nodded. This seemed oddly familiar.

Peachy held her tongue in between her teeth as she reached out a hoof and tentatively stroked it down the side. She started at the top, making a little swirl around the head as if to make sure that it was real, and progressed down toward the bottom, her hoof tracing across the veins as it made its way to the base. Horizon shivered with pleasure as she brushed against his sensitive member, his overgrown balls already throbbing again with need.

"Does that spell work on anything?"

He blinked, momentarily drawn from his reverie of lust. "Erm...yeah; I think it should." He shrugged. "It works on plants, at least, and you can see what it did to my own package. I think I've got some more control over it now, though. Why?"

His eyebrows climbed up into his forehead as a rosy blush tinged her cheeks, though her eyes were fierce and hungry. "Well...there's a certain body part of mine that I wouldn't mind bein' a bit bigger. Maybe a lot bit bigger...and maybe I should say 'pair' instead of 'part'."

"Which would that be? Your—" He stopped as he noticed the gaze of her eyes, which were pointing down between his legs. He suddenly remembered the cows. "Oh. Your, uh—"

Without waiting for a reply, Peachy took a step away from him, his dick throbbing in protest as her touch vanished from its skin. She sat back onto the warm hay, her legs spread wide—and conveniently exposing two rounded, moderately sized breasts sitting between her hind legs.

Horizon licked his lips. Chestnut had been fairly small in the boob area, but Peachy was definitely a much better—and bigger—sample. They were almost the size of apples, hanging in between her legs and bobbing in the open air. "You want those bigger?" he asked, a small, disbelieving grin on his face. "They're kind of already there, don't you think?"

Before he knew it, Peachy had grasped his face between her two hooves, pulling him closer until they were face to face. "Maybe," she said.. "But ain't no reason to settle, don't you think?"

Her lips brushed against his and he shivered, not bothering to resist. "I can...make it worth your while."

Horizon's horn was already lit, the tip flickering a bright, cheery green. Peachy looked up, eyes widening as sparks danced on its end.

"Now, I think I've got the spell under more control than before," Horizon said seriously. Peachy nodded vacantly, her eyes darting between his horn, her exposed cleavage, and his own throbbing stallionhood. "It won't blow them up like it did my dick, but it'll definitely make them a lot nicer. I mean, bigger."

His ears perked up as the magic began to heat up as the spell built at the base of his horn. A soft shlicking sound echoed in the stall, and his eyes followed the source until they came back to Peachy—or, more specifically, the space between her legs. One bright-colored hoof stroked gently along her taint, while the tips of her marehood were just barely exposed. As he watched, her hoof edged its way in between her pink-tipped lips, her rounded breasts pushed to either side around her foreleg. Up and down the hoof went, whitish-juices dripping down onto the now-moist (and slightly sticky) hay-covered floor. She spotted him looking and flashed him a grin.

"What? I'm just excited, is all. Gettin' this is like a dream come true." As if running automatically, her hoof came up again, just barely wetted by her dripping juices, and stroked against her nipples. Her exposed lips shivered, flushed with blood and sexual tension.

"Alright," Horizon murmured, a small grin on his face. "Just hold still, and—there." His horn flared.

Peachy watched in wide-eyed amazement as a light grown glow surrounded her breasts, its shimmer running up and down their taut curves. She shuddered in pleasure.

"Mm..." she murmured, her hoof running over her clit. "That feels so good."

After a moment, it became obvious why. Horizon watched with no small amount of hunger as Peachy's two well-sized mounds throbbed as the magic infused them—and then began to grow. They swelled outward, the two spheres widening in circumference until they pushed firmly against her hoof, which she reluctantly withdrew. They pulsed—one, two, three times—and swelled further, her skin stretching as her nipples grew, flushing a bright pink.

They soon passed the size of oranges and, fairly quickly, more resembled grapefruit with a broad, creamy appearance. They pushed out further and Peachy's back arced; she let out a low moan as an electric sensation ran up her spine. As the two breasts swelled to greater and greater heights, she closed her eyes and rubbed her hoof against their areola. As if reacting to the sudden pressure of both hoof and neighbor—by now, they were pushed against one another quite firmly—a thin trickle of whitish liquid began to dribble out from her nipples, leaking onto the floor.

Finally, the spell wore off, the green glow fading and leaving a disappointed look on Peachy's face. Her two breasts bounced between her legs, the two hind limbs pushed even further apart by their width. Horizon licked his lips, feeling a line of drool fall down the side of his face at the sight. Two melon-sized mounds rested on her pelvis, rising up into the air and looking very invitingly.

He tentatively reached out a hoof, and she nodded in wordless affirmation. Stretching forward, he slowly ran his hoof down their sides, feeling the warm, taut skin slide across his own. The two breasts were more than perky and full; they were just about as big as his own titanically-sized testicles. As he watched, that trickle of warm, white liquid ran over the top of his hoof. He pushed in further, the breast depressing under the pressure of his hoof. He looked up questioningly, and she smiled, nodding.

With his tongue held between his teeth, he leaned down and gently ran it up the length of her breasts. He had to nudge his dick out of the way, first—his member was standing like a rigid building in front of his face, but it was a simple matter to push it aside, letting its veined length slide down the side of his neck as he pushed his head forward.

He swirled his tongue across the surfaces of Peachy's breasts, pushing against her coat and leaving a slick trail of warm saliva behind. She shuddered in pleasure, her two mounds seeming to vibrate beneath his touch.

Horizon felt a sudden weight on the back of his neck. He allowed it to push him forward, guiding him until he was at the top of her left-side breast. The warm trickle of liquid was now a stream, a steady flow of creamy moisture that he lapped up with a flicker of his tongue.

It tasted good: thick, creamy. "It is milk," he exclaimed, coming up for air—and then dove right back in.

He latched his lips onto her, mouth clamping around her nipple and suckling—gently, at first, and then increasing in pressure and intensity until there was a steady stream of breastmilk flowing into his mouth. She squirmed under his weight, the roundness of her breasts pushing against his chin and forcing his mouth open. He gulped it down, loving the feel of the warm milk that filled his cheeks. Evidently, she did too, if the occasional moans of pleasure were anything to go by. His member, still at full length, his balls pushing his legs apart as he leaned down, throbbed in agreement with each swallow of her milk.

"Oh, yeah," she murmured, her twang slightly more pronounced than usual. "You take those babies out to dry. Mama's got a nice little present for you." He eagerly complied, and the suckling redoubled in intensity.

Finally, he'd had his fill, and drew back up and away from those luscious, lustful boobs. She winked as he licked at the sides of his mouth, cleaning up any of the last remnants of cream still speckling his face. "Tasty?"

"You bet!" he exclaimed. His dick bobbed up and down in agreement, his balls throbbing with need for release.  Then, realizing the volume of his prior shout, he flushed, chuckling quietly. "I mean...it was great."

"Glad to hear it, sugar." Peachy's eyelashes fluttered. Eyes half-lidded and cheeks flushed with blood, she licked her lips, the hunger sparking again in her eyes. "These are just...amazin'."

"You think so?"

"Darlin'." She chuckled, shaking her head. "I can't thank you enough—these babies are more than I could've ever dreamed." As if for emphasis, she poked one with a hoof, watching with evident glee as it bobbed up and down in the air. "And they feel..."

Her voice came down to a lower, sultrier pitch. "...so good."

Horizon nodded in silent agreement, his eyes roaming appreciatively over the two enormous mounds sitting between Peachy's legs. The stream of milk had slowed, thanks in large part to his own efforts, and now only a thin trickle leaked onto the floor once more. It fell onto a cluster of hay, where a mixture of milk and feminine juices was mixing beneath her flushed clit. His dick throbbed again, blood filling its veins as it strained even further into the air, filled with lust and power.

"Y'know..." Horizon blinked and looked back up. Peachy was giving him an inviting look, her hooves back to rubbing up and down the length of her marehood. "For bein' such a good little helper, I think the milkmare can give you a little present."

"Huh?" He tilted his head. "Wha—"

His eyes rolled up back into his head as she took his mammoth cock in between her two hooves and slowly, bending it down, guided it in between her oversized mammaries. His lips parted as he felt the weight of her two breasts on either side of his dick. She took the initiative, assuming that the look on his face was an invitation to go further, and slid its length up onto her waiting stomach.

Horizon's eyes rolled back into his head as the soft, plush mounds pushed against the sides of his cock. His hips bucked forward into the air, almost involuntarily, and his eyelids fluttered at the feel of the warm, rounded mammaries that choked his member.

"So...so soft," he managed to choke out. The feeling was all around him, his two-foot stallionhood like putty in this mare's massive mounds. He grunted, and a spurt of precum shot out of the end of his dick.

It landed over Peachy's face, a generous splotch of white that covered her nose and mouth. She looked surprised at first, but then grinned wickedly, using her tongue to lap it up. She moaned in pleasure as another spurt landed on her chin, its warm, sticky mass a bare hint of what was to come.

"Mm...you sure taste good, partner." She winked at him, squeezing her breasts around his rock-hard cock as he slowly pushed it back and forth. "I can't wait for the main course."

"Unh—heh." Horizon shot her a weak smirk as she took his dick in between her hooves, her thighs squashing her mammaries around its veined, throbbing length. "What're you doing?"

She fluttered her eyelashes back at him. "Oh, don't you worry none. Peachy knows what to do. You just lay back and—"

She grunted in surprised pleasure. Horizon's two hooves gave her perky nipples another quick squeeze, his swollen balls pushing against their comparable size. A thin stream of milk leaked out of the tops again, and Peachy moaned as his tactile hooves massaged her crotch. It was just...so...sensitive.

Her back arched in a sudden cry as her groin quaked beneath his dick, her lips moist and flushed with red. "I'm—ooh," she moaned, her hooves running down the sides of Horizon's dick. "That's the stuff." Vaginal juices spilled from her pussy, electricity running up her spine as Horizon's hooves squashed her breasts across the top of his dick. He moved his limbs in big, wide circles, stroking the taut skin along their surfaces.

With another grunt, Peachy held her thighs tight around her magically-enlarged breasts, their giant, soft surfaces like cotton against her skin. Slowly, she moved them up and down the length of Horizon's stallionhood, loving the feeling of his rock-hard member against her mounds with each thrust of his hips. She pushed outward with her hooves as well, massaging the churning depths of his balls. Another spurt of precum: this time, dripping down the sides of his mammoth cock.

She licked her lips. "Well, can't just leave that mess waitin' around, can we?"

Horizon waggled his eyebrows in what he hoped was some kind of sexy wink. "Don't think so. Wanna give it a taste?"

She bobbed her head up and down before quickly leaning forward, bringing the tip of his member to her chin so that it was as close as possible. Her mouth opened wide—not enough to take the head in—but enough to suckle eagerly on its tip, lapping up the remnants of his pre that still clung to the sides. He shuddered as her tongue ran up and around the length of his head, sliding around the ring of skin that lifted it above the rest of the shaft. She came away with a long line of dribbling precum hanging from her mouth, her thighs still sliding his shaft up and down her stomach with each passing second. "Mm. Sugar, that's good stuff you got there."

"Glad you like it." Horizon squinted, trying to see through the haze of pleasure that crowded his vision. "I wanted to try something else."

"Mm?"

"How's—this?"

With a grunt and another thrust of his hips, Horizon brought the tip of his dick up until his balls were pressed tight against Peachy's ass, their voluminous girth pushing her cheeks into her hips. His pelvis thrust outward—once, twice, three times—letting the bottom of his cock slide against the top of her giant breasts as the base of his cock pushed against her dripping marehood. His ring bulged with pre, more and more leaking out of the tip of his cock until the whole head was smeared with translucent, sticky white.

"Don't—stop!" Peachy dove right back in, licking and sucking at his tip in an effort to clean up the precum there. It was a race between her and his churning balls, though—with each swallow she made, it seemed like there was always more to come. Her stomach was already starting to look a little swollen, though his balls still throbbed with need and an overwhelming urge to spill their seed.

And then he felt it—that deep, throbbing tension at the base of his shaft. "It's—it's coming," he grunted, closing his eyes and scrunching his mouth. He tried to hold it back, but Peachy only took that as a challenge.

Her dexterous, athletic hooves, toned from years of farm work, took his dick in her grasp. Hugging her voluminous mounds to her chest, she licked, suckled, and bit at his tip even as she pushed her soft breasts against his sides. Horizon's will weakened, the warm, plush skin against his rock-hard member like heaven as he thrust in and out of her crotch. A line of warm lactate spurted from Peachy's nipples, his own hooves playing with her breasts and clit as hard as he could.

"It's coming!" he repeated, even louder this time. "I—I'm coming!"

"Let it come, partner!" Peachy hollered. She ran her tongue all the way up a length of vein before slopping it up back into her mouth and swallowing the glob of precum that had landed right in her mouth. "Let it all out!"

Horizon wasn't in any mood to argue. His balls singing with a need for release, his hips bucked outward like lightning, the ring at the base of his shaft swelling as it filled with the first quart of cum.

His balls exploded, cum flying forth from his tip in rocket after rocket of long, sticky strands. In a flicker of motion, Peachy had pulled her head back and pushed his dick down the length of her stomach, as if trying to milk it with the pressure of her compressed mounds. It did the trick, or at least seemed to—the tension redoubled, and his dick seemed to swell outward with the sheer amount of pony cum filling its interior.

Globs of warm, thick seed flew forth from his tip. They flew through the air, unhindered—landing on his hooves, on his balls, on Peachy's legs, and on her hooves. Sticky strands landed on her stomach and dripped down to the hay-covered floor, where they mixed with her marehood's juices and another generous spurt of milk from her nipples, milked by the pounding, throbbing pressure of his stallionhood between them. She turned her head up just as another mass of cum shot from the tip of his cock—whether by coincidence or by design, it landed with a wet, moist-sounding splat right over her snout.

Her eyes widened, her mouth opening slightly as the cum dribbled down the sides of her face. Her back arched, causing a few drops of cum to go flying back in the air as she moaned in pleasure beneath the sheer, sudden weight covering her skin. Two more spurts followed the first, their sheer volume coloring her face white in a fraction of a second. She inhaled in surprise, and a glob of thick cum went right up her nostrils.

More and more followed, covering her breasts, their taut, perky surfaces quivering in anticipation. Her stomach was a mass of sticky, warm seed, yet Horizon's stallionhood still shot out load after load, his balls emptying out their supply on her exposed, inviting body.

Finally, the tension lessened. Each spurt came more and more infrequently, yet it was still as warm and full of seed as the one before it. As the last one landed on Peachy's chest, covering her in white, she let out a long, pleasured sigh.

"You sure do taste—" she licked her lips, swallowing a mouthful of cum, "—delicious."

It was an incredible sight. What looked like gallons of Horizon's seed had covered her in white, with long, dripping strands falling down around her head. Her mane was a sticky mass of tangled white, while her overinflated breasts had long since mixed their own secretions with his. He shot her a small grin, slowly pulling his cock back as it deflated.

"That was amazing," he murmured, rearranging his emptied balls so as to be more comfortable. Peachy winked at him.

"Amazing? You betcha." She looked down at herself, one hoof running down her cum-covered stomach as if she really couldn't believe it. "Horizon?"

"Yeah?"

Her eyes sparkled. "You can come over again any time you like. My 'n my girls," she said, pointing at her watermelon-sized mammaries, "will be happy to have you." She winked again. "Or, if you'd like, my little honey lips down here." She wiggled her thighs, the lips of her drenched pussy showing to the air.

Horizon licked his lips, his balls making sure to note that down for later. "I'll remember that."

She beamed at him, and then broke out into chuckles. "Oh, shoot," she murmured.

"What?"

"It'll be hell to get this mess off me, and I'm not entirely sure I wanna." Peachy raised a cum-soaked eyebrow in his direction, a playful smirk on her face. Her giant breasts bounced up and down on her stomach, their taut surfaces smudged with white seed. "Care to spend some time washin' up together?"

Horizon didn't even hesitate.

Chapter 3: Hotdogging It [M/F] [Hyper Cock] [Ass Expansion] [Hyper Ass] [Cum Inflation]

Horizon hummed to himself as he trotted down the dirt road that led back from the on-farm research facility. Chestnut had her samples—a small little apple that he'd grown into something more befitting a dragon, with a two-foot diameter and an even larger weight; and an oversized chipmunk that he'd managed to transport to the lab with the aid of some heavy telekinesis and a barred cage—and with any luck, she'd soon have some results for him to look at.

For the moment, though, he didn't quite know what to do. It was his day off—Saturday, when about half of the workers on the farm got leave—and he still wasn't sure how to spend it. He could hang out in the orchard and read a book or something, but he didn't exactly fancy spending more of his time near where he worked, anyway.

A thought came to mind, and a crooked, dreamy smile emerged on his face. Cherry Blossom's face looked back at him, her sultry eyes fluttering below long, luscious eyelashes. He sighed happily as the illusory mare took a step forward, the daydream resting its head against his neck before moving lower and—

His dreamy—and somewhat perverted—reverie was rather rudel interrupted by the sound of muffled moans off the side of the path. He blinked, stopping in his tracks. Could someone be injured? He'd heard somepony groan in pain like that before, back when old Caramel Oats had fallen off a ladder and gotten pinned underneath.

I'd better go check.

A louder, more painful grunt snapped him back into reality and sent him galloping off toward the source of the noise. It was a small house, and he noticed that the door had been left half-open. It was one of those top-and-bottom country doors, where either half could swing outward as needed. As he approached, he could hear the pained moans increasing in amplitude until he was right outside, the blood pounding in his ears.

"Is everything okay in—" he began.

He stopped straight.

The top half of the door was thrown wide open, leaving the interior fully visible. Right beyond the door was a kitchen; it was fairly well-kept, with its counters sparkling clean and a tastefully assembled bowl of fruit sitting on the table. Past that was what looked to be a living room, and it was that room's couch—or rather, the occupant couch that drew his attention.

A lithe, bright-blue mare lay on her back, evidently the source of the groans he'd been hearing. Her mane, which looked like it had been kept in a bun, was disheveled, with several strands of hair hanging off to the sides. Her face was flushed, and as he watched—somewhat incredulously—one of her forehooves roamed down to the space in between her legs and rubbed gently.

Horizon's cheeks burned a bright red as he watched, unable to look away. The mare moaned again, her hoof pressing a little harder between her legs. Apparently, she hadn't heard his earlier exclamation—she was probably too absorbed in her "work" to have noticed. It was like watching a train wreck: a very sexy train wreck, if such a thing could be said to exist. He wanted to step back and bolt away—pretend it never happened—but he couldn't, for two reasons.

First, there was always the possibility that retreat might make enough noise to attract the mare's attention. His ear twitched, a bead of sweat dropping down his forehead as the mare moaned again.

The second reason, though, was a bit more...

...personal.

Horizon swallowed, unable to tear his gaze away from the full, shapely flank whose Cutie Mark he recognized instantly. The forestallion's wife was fairly well-known around the farm, after all, and the lily-of-the-valley mark on her side was the only thing more easily recognized than the rump on which it sat.

And what a rump it was. Horizon licked his lips, watching as those rounded cheeks bounced lightly up and down with each thump that Lilydale made on the couch. Her hoof was moving in light circles now, and the tip of her tongue hung out of the side of his mouth. Subconsciously, he felt his concealed package emerge from its sheath, its veins swelling with blood as it poked out beneath his stomach. On reflex, his hoof came up to stroke the tip. He sighed with pleasure, his groin tensing up and pushing his bobbing cock a few inches forward.

"Who's there?"

He jumped. Because he'd been standing right by the door, his neck craning over the lower portion in an effort to see inside, his head cracked right up against the top of the door frame. He let out a high-pitched yelp, his head throbbing.

"Ack!" A white-hot, earth-splitting pain echoed through Horizon's skull. He held a hoof to his horn, gritting his teeth and refusing to meet Lilydale's eyes. "I—I can explain."

"Who's that? How long have you been there?"

"I didn't see anything—I promise!" His cock was beginning to deflate, the sensation centers of his brain more focused on pain than on pleasure at the moment. "I—ugh—I mean—"

"Horizon? Is that you?"

He looked up.

Lilydale had sat up on the couch. Unsurprisingly, her hoof had been hastily removed from her marehood, and she was staring at him with wide, owlish eyes. A small puddle of juices still dripped from between her legs and off of the side of the couch; it seemed that she'd been getting close to...well, release before he interrupted her.

Horizon swallowed again. It seemed appropriate. The action, though, nearly made him double over in pain again—another flash of white fire across his skull made him clench his teeth and jerk his head. The weight of Lilydale's gaze on his shoulders made him wish that he could just sink through the ground and come out somewhere in Saddle Arabia.

"My goodness! You're hurt!"

He barely registered the sound of trotting hooves before feeling a soft touch against his cheek. Horizon looked up, eyes widening.

Lilydale had put her hoof against him, softly moving it up toward his forehead. "Oh, you poor thing." With her hoof pushing his head down, he was unable to avoid looking at her other hoof, still moist and dripping onto the stained wood floor. "Come inside so I can have a look at it."

Wordlessly, and lost in what felt like a haze of confusion, Horizon let her lead him inside. The door swung open without any resistance, and he followed her past the kitchen and into the living room.

"Sit." Her voice betrayed no semblance of subordinance; this was a mare who meant business. He automatically obeyed, not even wondering if his flank was now resting on the same couch cushion that had been soaked in feminine juices not thirty seconds before. His head hurt too much for him to care.

Horizon felt a soft pressure against his forehead. In some corner of his mind, he registered the touch, feeling surprised that it didn't make his head hurt even worse. If anything, the pain seemed to be...receding? With each small circle that Lilydale's hoof made around his horn, his head seemed to resemble a the aftermath of an earthquake a little less. Thankfully, it wasn't long before he could think coherently once again, the pain having dulled until it was little more than a dull throb.

Then he opened his eyes, and instantly wished for incoherence once again.

The house he was in wasn't large, by any means—Plowshare, the forestallion, wasn't paid too much above the rest of the workers, and he wasn't known to be an extravagant pony—and the living room was one of the more homely ones that Horizon had been in. A small collection of china plates rested above the mantle, their rims colored a bright, cheery blue. A pair of white quilts with doily patterns had been draped over the back cushions of the couch. A cat was curled upon the rug, its chest gently rising and falling.

Horizon gulped for a third and final time. Yup; it looked like he'd sat right on the wet spot. Dammit.

"There." Lilydale looked up into his eyes—she wasn't a very large mare, and was in fact rather petite (in all ways but one), so his head stretched a few inches above her own—and smiled. She pulled her hoof back, letting it stroke across the bridge of his forehead one last time. "Does that feel better?"

A shiver went down Horizon's spine at her touch. "I—uh," he sputtered.

"Mm. I'll take that as a yes." Lilydale quirked an eyebrow. "The pain's gone?"

"Y-yes," he stammered. He decided that he probably looked like a deer caught beneath the landing gear of a particularly large airship. His hooves felt clammy and his throat dry. "B-but why didn't you—I mean, how—"

"Ah, ah, ah." Lilydale clucked her tongue loudly and placed a hoof over his mouth. "No loud talking while you're still recovering. You don't want your headache to come back, do you?"

He shook his head silently.

"Good." A secretive little smile crossed her face. "Now, I assume that you're wondering why I invited you in here even after you saw me...well." Her cheeks colored a light pink, though they were nowhere near the brash, flaming red that his own had been. "To answer your question, I wanted to get a look for myself."

His eyes widened, but her hoof was already trailing down his chest, her warm coat pressed against his. As she approached the bottom of his stomach, she appeared to meet with some resistance, and let out a squeal of delight.

"So that where you've been hiding it," she said, giving him a half-smirk. Another shiver went up his spine as her hoof stroked across his unseen stallionhood. "I must say, I can't imagine why you'd hide it like that. Do you feel ashamed of it?"

"I—" Horizon's eyes nearly rolled back into his head as her hoof touched the side of his member just so, sending little ripples of pleasure coursing through his body. "But—your husband—"

"Plowshare?" Lilydale rolled her eyes. "We've an open relationship; I'm sure he won't mind. I dragged him home last night after a bender with at least two other stallions last night, so there's no way that he can complain."

At Horizon's dumbfounded expression, she let out a high-pitched laugh. "Oh, silly me. I suppose you didn't know that about him?" She winked. "Little Plowy likes his stallions almost as much as he likes his mares. But let's not talk about him—he's out in the field, sweating his flank off over Celestia-knows-what."

She leaned in closer until her lips were almost touching his ear. "Let's talk about you."

Horizon couldn't take it anymore.

"What's going on here?" he demanded, pushing her away. He licked his lips; the back of his throat felt like sandpaper, and the throb in his head was beginning to come back. "You—I know you said you had an open relationship, but you're still married! And I'm the colt who just stood outside watching you play with yourself without your permission!" His cheeks burned as she leered at him. "N-not implying that you usually give permission or anything."

She threw her head back and laughed. "Oh, Horizon. Still so innocent—though certainly not as innocent as you sound if half the rumors going around the farm are true." She looked back at him, grinning. She wasn't old, by any means—she was at least ten years older than him, but she'd aged well; gotten tighter and prettier instead of wider and flabbier. Her mane, still only halfway done up in a bun, was a bright, cheery yellow, and it brushed against his leg as she moved closer.

"I invited you in because you were just the stallion that I wanted to see," she murmured, her hoof playing across his chest. "I've been meaning to see if the other half of the rumors are true—goodness knows my husband ranted about it long enough last weekend to last me a lifetime of good smut."

"I—"  

She stopped, looking up at him with some concern. "Unless you feel uncomfortable? I don't mean to force you into anything."

The weight of her smaller hoof on his chest was enough to convince him by itself, but he couldn't help it as his eyes were drawn—almost magnetically—back down to her flank. It was a round, bubble-shaped rump, with its only visible cheek barely depressing the cushion below it. There was a strange sort of shine to it, and for a moment, he wondered what it would look like from an underside's view.

"No," he blurted. "I—I'm fine." He bit his lip, returning to an angry shade of maroon at the laughter in her eyes.

"Wonderful." Lilydale crept closer to him, her hoof straying a few inches below his chest. "Now...would you mind letting me see it for myself? I've heard so much about it."

There was no question as to which "it" she meant. Wordlessly, and with the barest flicker of green sparks at the tip of his horn, Horizon removed the invisibility spell and let his package ripple back into existence.

Lilydale sucked in a sharp breath at the sight of the thick, dark cock draped across his legs. "Oh, my," she murmured, a hoof flying to her chin. The other hoof, meanwhile, hovered a few inches above his swelling balls, almost hesitant in the way that it swayed above his package. "This is most impressive."

Horizon cracked an uneasy grin at that.

"And you did this with a spell? Your vegetable growing spell, that is?"

"Well, yes." Horizon blinked. "I used it to—"

Whatever he'd used it for, he couldn't say. Instead, it felt like the breath had caught in his chest, all sentient thought fleeing until it flowed alongside one, pulsing vein on the side of his cock. He sighed, his chest falling as his stallionhood began to swell outward once again, its thick length filling with blood.

Lilydale gave him a smug look as his dick began to stiffen. "Oh? Feeling a bit more attentive already?"

Horizon bit his lip as her hoof continued making those small, tight circles around the side of his cock. Celestia, that had to be the least sensitive part of the whole thing, and she was making him feel as though the whole thing was being pleasured at once! He shuddered, feeling that pinprick of pressure rubbing against his member. If nothing else, Lilydale knew what she was doing.

He grunted. "Miss Lilydale—"

"Please," she said idly, "Call me Lily." A predatory smile flickered over her face. "After all, I have a feeling that we'll be getting very well acquainted in the coming hour or so."

"Eurgh—Lily, then." He bit his lip. "Why—why—"

"—am I doing this?" She affixed him with a firm gaze, her hoof momentarily pausing in its progress around his circumference. "Simple, really. I wanted to see for myself if your spell worked. It's possible for you to apply it to other ponies?"

He blinked.

His eyes drawn back down toward that bouncing, bubble butt, he suddenly realized what she was getting at.

"Er, yes."

She smirked. "Lovely. Then you wouldn't mind using it on me, then?"

A few thoughts floated around Horizon's head. The first—now mostly faded—was the sensation of a great, pulverizing pain, splitting everything in its path. The second was one of confusion, clouding his other thoughts as he tried to organize his emotions.

The third, though, was pure desire. Not just physical desire, but a desire to please—to pleasure somepony else. He wanted to make Lily happy, and the idea that she'd ask for his own, signature spell made his heart swell up in time with his own stallionhood.

"Absolutely," he said, before he'd even thought it through. "What did you want me to do?"

He already knew her reply, of course, but knowing what would come next made it all worth it.

"Mm." Lily put a hoof to her chin, prodding her snout. "You know, I can't think of anything...well." Her expression turned into a generous smirk, and she turned away from him. That wide, supple rear waggled in his direction. Horizon had to stop a line of drool from dripping down his face at the sight of those taut, generously-sized flanks bouncing toward him. "I can think of one thing."

She had him. They both knew it. Almost unconsciously, the tip of Horizon's horn began to flicker a bright, warm green.

"You've got it," he said, a faraway look in his eyes. All he could see was the vision of that bouncing, puffy rump; it filled his mind's eye—along with daydreams of what it would look like once he was done with it. "One Horizon Magic Special, coming right up."

He didn't even care that the name was the dorkiest damn thing he'd ever come up with. An older mare wanted him to grow her ass, and by Celestia, he was going to grow that ass.

And tap it, if at all possible. The look in her eyes, though, gave him a warm feeling of confidence in his chest. Horizon, it looks like opportunity's come knocking.

He looked up.

"Horizon, dear," Lily said, giving him a little half-smile. "Why don't you come over here? I can see that you're already as...excited about this as I am." As if for emphasis, her hoof wandered beneath her stomach before coming to rest right between her hind legs. Horizon swallowed, feeling his blood pump a little faster as Lilydale slapped her clit playfully, letting a few drops fall to the carpet below.

His gaze wandered down between to his own legs. Sure enough, he was as "excited" as ever—or perhaps even moreso than usual. His cock seemed to have swelled up to at least an inch or two past its normal two-foot length, and he could swear that it looked just a bit thicker than usual. Still, there was a tightness around it, the skin pinching against his swelling veins as his balls churned with need and desire, bobbing happily between his legs.

Her smile widened as he took a step forward, his oversized dick smacking against his thigh with each movement he made. "Yes," she purred, "that looks very nice. Why don't you take a front seat to the show?" She waggled her rear again for emphasis.

Horizon's eyes widened. "You mean—right there—I—"

She laughed; it was a bright, cheery sound, though tinged with a sultry undertone as well. "Just slip right on in, honey," she said with a wink. "Right between those two girls of mine. They'll be happy to have you."

Still hardly daring to believe his luck, Horizon took another step forward and licked his lips. That flank looked awfully inviting: two, bubble-shaped cheeks that seemed to shine in the bright light. He could almost make out the veins of muscle weaving with the generous pockets of fat on the surface; with each breath Lily took, her two "girls" seemed to jiggle a bit from side to side.

"Of course," he breathed.

Most mares' rumps aren't made to hold a two-foot long cock between their cheeks, let alone the girth accompanying one of such a size. Yet as Horizon slid his dick in between Lily's cheeks, her taut rump seemed to fit perfectly around his length, squeezing it just right but while allowing it ample space. No lubricant was needed; he marveled at just how smooth her coat and skin were. Starting from the bottom, right in between her legs, his cock extended up between her cheeks until she was hotdogging a good foot—at least—of stallion meat, with the tip poking out from just the top of her rear.

"Feel good, sweetie?" Lily fluttered her eyelashes.

Horizon bit his lip, momentarily unable to form a coherent thought. Lily's two cheeks had clenched tightly around his cock, squeezing it as his low-hanging balls slapped against the back of her legs. Still...

She didn't cover it completely.

"It feels...wonderful," he sighed. As if for emphasis—and further encouragement—she thrust her rear a few inches higher in the air, bending her forelegs and pushing his dick up further above her toned rump. "Mm..."

"Glad you like it, sweetie," Lily purred. "But..."

"But what?"

She grinned. "Let's make it feel even nicer. For both of us."

Horizon was already nodding. "You got it," he murmured, his horn flickering back to life.

Green sparks danced along the length of his horn as a similarly-colored glow appeared around Lily's rump. She gave a soft little gasp as the magic clenched tight around her coat, squeezing her wide, supple flank, and then gave a quiet moan as, almost imperceptibly, her cheeks began to expand.

Horizon felt it before he saw it. With each heartbeat—each pump of blood through his cock—he felt her ass swelling around him, holding his length tight between her cheeks. That firm, taut flesh blossomed outward as Lily's moans increased in volume and frequency; second by second, inch by inch, her rump kept growing until her cheeks were wide enough to surround more than half of Horizon's length.

He groaned with pleasure, loving that feeling of increasing tightness. He bucked his hips forward. He'd already mounted her, but his thrusting motion made his dick go up even higher between her cheeks, letting the squeezing sensation slide down until it was clamped tightly around his base. His medial ring throbbed as her ass grew and grew around his cock, trapping it inside of a cloud warm pony flesh.

Horizon was in heaven. By now, Lily's ass was the size of two basketballs, each one packed tightly against the other. But there wasn't a feeling of discomfort from the pressure—it was the perfect mix of taut, toned muscle mixed with soft, plush skin. He bit his cheek, pulling back and thrusting again as he felt her rump rise into the air, egging him on. As her ass swelled a few more inches, he could feel that wide, supple flank clamp tightly around his head, teasing the edge of his cock. It was like fifty pounds of pleasure, focused in on one tiny ring—and then she released it, instead letting her ass grow until it surrounded the rest of his cock.

And surround it it did. From a starting point that was barely larger than a pair of melons—Horizon could scarcely believe that he thought "melons" were small, but compared to the glorious piece of flank staring him right in the face right now, even a soccer ball was a drop in the bucket when it came to size and full, lush appearance.

Lily's ass was now so huge that it drooped a bit below her stomach, her two enormous cheeks reaching the size of small beach balls. Folds of firm flesh held tight around Horizon's stallionhood, wrapping most of its circumference until a majority of his organ had been concealed from view. All that was left were two huge, soft spheres that bounced and quivered with the slightest movement.

On impulse, Horizon brought a hoof back before slapping it right over Lily's growing rump. It left a wide red mark that seemed to stretch as he looked at it, the skin beneath quivering and growing outward even as he drew his hoof away. His eyes fluttered shut, and Lily moaned in return; it seemed that his well-placed strike had forced her assflesh even tighter around his cock, masturbating it with each jiggle and perky bounce that those enormous cheeks made.

"Oh—oh, Celestia." Lily moaned, her eyes rolling back. "It—there's so much. I can feel it—it's so enormous." She wiggled her rear, that enormous flank bouncing in the air. "My own flank—the skin is—"

Horizon felt the already-smooth skin surrounding his stone-hard cock slicken with moisture. It was warm, and when he sniffed, it smelt of Lily's juices. He had to bite back a smile; it seemed that Lily's rump had grown enormous enough for each quiver of that blossoming flesh to rub up against her marehood. Juices dripped down from between her legs and into the vast folds that made up her rear. His cock throbbed as he thrust his hips again and again; by now, the only part of his cock that was still visible was the head and his vast, churning balls filled with warm seed. Thick globs of precum dripped from his tip, falling onto Lily's swelling flank and lubricating it even further.

He felt the pressure reach a crescendo as Lily reached her peak size. Two bulging beach balls protruded from either side of her hip, smothering his throbbing cock with what felt like several tons of fat and muscle. One moment, folds of skin stroke along the sides of his stallionhood as his balls churned beneath him; the next, a vicegrip of iron had tightened around his member until it felt like the tip was going to burst. Juices dripped down onto the floor, feminine fluids mixing with cloudy precum as a generous quantity of each puddled on the carpet.

"Nngh..." Horizon felt his eyelashes flutter as that familiar tension made itself known at the bottom of his cock. It felt like there was a dam, straining against a wall barely big enough to hold it all back, and the tip of his dick reflected that. Precum, thicker and thicker, leaked from the tip until there was a steady drip-drip his musk onto Lily's enormous flank. He thrust again, some of that pre streaking across the sides as those giant flanks flexed and swelled before receding and starting the whole thing over again.

"I—I'm cu—"

No sooner were the words out of his mouth that he felt a sudden absence of weight around his cock; if anything, the only sensation left was that of a cool current of air and a deep, churning groan that echoed from his aching testicles. He looked up in dismay, feeling his cock throb with want and need for release.

"Come now, big boy." Lily's eyelashes fluttered, and she waggled her rump again. This time, though, it was a full foot away—even at its new, impressive size, it was still too far for Horizon's oversized dick to reach. "We can't have you finishing up that easily."

Horizon whimpered. It felt like thick waves of semen were crashing against the sides of his balls, his member screaming with a need to fuck—a need to cum—a need for release. And it had been denied to him. "P-please..."

"Please what?" Lily quirked an eyebrow, her tone teasing. "Speak clearly, young man." Her firm, toned ass teased him, bobbing up in the air with each word that dripped from her lips.

"I need you," Horizon whimpered. "I need...I need to cum. Please."

"Hm..." Lily's eyes glittered; it was clear that she was enjoying this. "Well, do did say the magic word...so perhaps just this once."

Horizon's heart soared as Lily bent forward, her ass rising high into the air once more. Those cheeks—that glorious, bulging flank—bounced in the air like inflated melons, each tiny vibration sending a horde of rippled across their surface. His dick throbbed; as a trail of drool slipped from Horizon's mouth, a trail of pre leaked from his aching tip, dropping onto the floor in a thick glob of white.

"Ah, ah, ah," Lily murmured as he took a step forward, reaching for her ass—that huge, wondrous ass. He almost wanted to worship it; it demanded to be obeyed. "I think you've earned the right to use...the backdoor."

She purred as his jaw dropped. It felt like his dick was trying to stand up a full three feet over its two-foot length. His churning seed screamed for release, and with a single grunt, he pushed Lily's cheeks apart, took a step forward, and thrust.

It was tight—unimaginably so. A mare's pussy, or even a mouth, had never felt as tight as this. Well-lubed with pre and feminine juices, the head of his cock slipped right in, Lily's ass covering his length over halfway.

Lily let out a yelp. "So...so much," she whimpered. She bit her lip and turned around, giving him a wink. "W-well? What are you waiting for?"

Horizon swallowed. He pulled back ever so slightly until just the tip of his member was left inside Lily's asshole. Then, with a mighty grunt and a thrust of his hips, he shoved it back in.

"Agh—" Lily grunted, her head going back as Horizon's eyes rolled up into his forehead.

"So...tight," he grunted. "Celestia...it feels amazing."

Lily turned back and offered a weak smile. "Yes...that's right, big boy," she murmured. "Fill me right up."

Horizon gave her ass another smack—maybe it was in encouragement, or maybe he really wanted to slap that flank. Regardless of the reason, the sensation of the enormous, rolling balls of flesh across his length only intensified the pleasure that he felt. He pulled back a few inches, letting that tight, full muscle clench around his girth—and then pushed it back in, sliding easily through until he'd fully hilted his cock inside of her.

Lily let out a quiet little gasp. "Oh—oh, goodness," she panted. Her ass came up around Horizon's body, his every thrust pushing her cheeks against her clit. She moaned, feeling so tight—so full. "I..."

"Is it too much?" Horizon asked, suddenly concerned. She shook her head.

"Oh, no," she murmured. She licked her lips, and Horizon felt something warm and moist leak onto his crotch. "It feels...good. So good. Better than ever before."

Horizon didn't need any more encouragement than that. He continued to thrust inside of her, pulling out and then pushing back in; her hole grew a little looser with each new penetration. His balls slapped against his thighs, the smacking of flesh filling the room around them as their grunts and moans echoed in harmony.

Precum once again began to leak from Horizon's thick, throbbing length. Lily moaned as the first load dribbled inside of her, with what felt like a full cup of liquid filling her body—and this wasn't even the main course! Struggling to turn back over Horizon's cock and her own jiggling flank, she managed to catch a glimpse of her mounter's monstrous balls, their gallons seed churning within. She licked her lips hungrily.

"Take me," she murmured, the volume of her voice increasing. "Take me, you stallion! Rut me hard!"

"You like that?" Horizon grinned, his eyes narrowing. He'd never bedded a mare as experienced as Lilydale before, and something about her aura made him feel...confident. Like he wanted something more, and was willing to grab it with his own two hooves. "You like that, filly?"

He thrust inside of her again, another thick drop of precum splattering against her insides. Her tight asshole contracted, choking off his throbbing member as Lily herself choked out the words, "Yes! Yes, I like it!"

"Do you love it?"

"I love it!" Lily's eyes rolled back into her head as Horizon pounded her, rutting her mercilessly with each penetration into her tight hole. "Oh, Celestia, fuck me! Fuck me harder!" As Horizon's dick thrust into her hole one more time, Lily was finally overcome with a fullness of pleasure; between the internal stimulation of her g-spot, the sense of complete fullness, and each slap of her flesh against her marehood's lips, she was ready to climax.

She screamed as Horizon hilted his enormous dick inside of her again, climaxing and letting her juices splash all over the carpet below. "Fuuuuck," she moaned, pushing her flank up even further into Horizon's view.

There it was again: that sense of tightness: of anticipation. Horizon bit his lip as his balls cheered, ready for release. "Do you want it inside?" he managed to grunt, the slapping of flesh still filling the room, "or outside?"

Lily barely hesitated. "Inside," she moaned. "Oh, Celestia, inside me. I want to feel full. Fill me with your seed."

"Then take it!" Horizon thrust into her a final time. "Take it all!"

The dam burst.

The tension fled from his cock all at once as his balls erupted, spurting thick globs of cum inside of Lilydale's ass. It was a struggle to get it through her tight ass, a sizable swelling of seed building up at the base of his cock, but as the pressure built, it all burst inside of her, flooding her inside.

Lily moaned. "Fill me, Horizon. Fill me more. Oh, Celestia. Celestia fuck me."

Horizon was only too happy to comply. It felt like Lily's tight hole was milking him for all that he was worth, her slick insides and firm ass squeezing against his massive length and getting every drop of cum from the depths of his balls. He could already see her stomach swelling, her insides growing outward with each pump of cum: gallons, it seemed. Soon, it became clear that it was too much, and his hot, steamy seed began to leak out from her ass, spilling around the sides of his cock and falling through the folds of her ass.

Fill her up he did; with each pump of semen, her belly swelled outward until it bulged forward with his seed. All around him, her massive flank quivered, and he sighed contentedly as the flood slowed to a stream, and then a mere dribble.

Finally, she looked back at him. "All finished?" A tired, contented smile played across her face.

Horizon gave a single nod and collapsed.

Chapter 4: Masculinity [M/M] [Hyper Cock] [Hyper Balls] [Cum Inflation]

"A little higher...no, just over the ridge...a little more tongue..."

Horizon's eyelashes fluttered as Tiller ran his tongue up the length of his massive cock, sensually licking Horizon's flare. "Just right..." Horizon murmured.

Tiller had worked on the Acres since before Horizon had gotten here. He was fairly popular with the mares, too—strong build, thick, tall frame—but if there was one worst-kept secret on the entirety of the farm, it was that Tillerhole was as gay as Hearth's Warming Eve and as flaming as the Sun above.

It'd been scarcely fifteen seconds after making eye contact with the other stallion that Horizon had caught Tiller down on his knees, tongue dangling from his mouth as he begged to see Horizon's endowment. One thing had led to another, and soon enough the two found themselves in the back of the grain silo, with Tiller's lips planted firmly around the tip of Horizon's stallionhood.

It was almost scary, Horizon reflected as Tiller ran a train of kisses and soft slurps down the length of his throbbing member, how massive his sex appeal seemed to be now. He'd known that news travelled fast, but he'd never expected it to have this kind of impact. Sex in Equestria might be a bit less formal than in the other nations, but it was still a surprise when the first words out of another stallion's mouth were, "I need to suck your cock."

So there he sat, imprisoned by light pleasure as Tiller's tongue ran up and down the length of his cock. It throbbed happily under the attention; standing at just over two feet already, Horizon's erection seemed to lap up each of the other stallion's licks with a new pulse of blood into the massive member.

Horizon moaned again; wherever and however Tiller had been educated, he knew how to give a blowjob like nopony else. Even on a cock as large as Horizon's, the other stallion seemed undaunted, slurping up and down the sides and opening his mouth so wide—so as to just fit the flared head in—that it seemed he'd unhinged his jaw.

Horizon felt a surge of pleasure, an overwhelmingly warm sensation, as Tiller opened his mouth even wider and pushed himself down on Horizon's dick until it had was brushing against the back of his throat. Horizon could hear Tiller's jaws cracking as his monstrous cock forced them ever wider, the stallion's warm mouth moist around his length as Tiller's tongue played and danced around Horizon's girth.

As Tiller slowly moved his head up and down what little of Horizon's length he could fit down his mouth and throat—an astonishing six inches, which was just incredible given the volume of Horizon's cock!—a small smile fluttered across Horizon's face, his eyes still closed in bliss. The oral sex had already spurred him on: his horn was glowing a light green, as if, by reflex, his magic knew that a pleasured erection meant that something, somewhere, was about to grow.

Horizon had barely contemplated another stallion going after his cock; after all, he'd been too busy drowning in pussy to even think of it. Now, though, with Tiller's thoroughly skilled mouth pleasuring his length, Horizon began to wonder which part of his anatomy he could grow. It had to be something new, he decided; something that would make the whole experience that much more intense. Stallions certainly didn't have breasts, though; nor did they have marehoods whose depths could be grown until Horizon's entire length—all two feet in length and over a foot in girth—could fit inside. His eyes swept over Tiller's own stallionhood: a respectable—though puny compared to Horizon's—seven inches.

He couldn't deny, though, that he enjoyed his status. He could grow Tiller's cock, true, but then there'd be two hyper-endowed stallions on the farm, and while he liked to think that he didn't have too much of an ego, it was easy enough to admit that he wanted to retain his status—and therefore reputation—just a little bit longer.

Horizon smirked. Who said he had to make Tiller's entire cock bigger?

His horn flickered as Tiller's licks increased in speed and pressure, his mouth caving in around Horizon's cock. A mixture of saliva and fat drops of precum leaked from Tiller's muzzle, dripping down Horizon's stallionhood with each thrust of Tiller's throat around it. As Tiller continued going to town on Horizon's cock, a light green glow sprung up around a certain part of his own anatomy.

Tiller moaned gently, feeling his balls be gently massaged as he slurped around the flare of Horizon's dick. It was an odd, tickling sort of sensation: it didn't hurt, really, but it was a light pressure that made them feel a bit heavier against his thighs. Then heavier. Then—

Tiller took a moment to pull his head off of Horizon's cock, his mouth coming free with a wet-sounding schlop. His balls still tingling, Tiller glanced down with saliva and pre still dripping from the sides of his mouth. His eyes widened. His balls were already nearly twice their normal size. His stallionhood, which had been resting on them as if they were a pillow, was slowly rising even further into the air as his testicles expanded.

And they were still growing. Tiller's jaw dropped as his balls—still growing a bright green—surpassed the size of nectarines in size, moving on to pass apples, and then even oranges in volume. He moaned, Horizon watching with smug satisfaction, as the amount of unspent cum filling his balls doubled, and then doubled again, churning and stirring a deep need inside of him to spill his seed.

"You..." Tiller grunted, his hooves hovering above his balls as though he was scared to touch them. "You're doing this? Just like with your—?"

"Yup." Horizon shot him a grin, running a hoof down his own massive length before letting it come to rest on his enormous balls. They sat between his legs, his own seed still splashing against their insides. "Just sit back and enjoy."

Tiller watched in increasing amazement as his balls grew and grew. He could feel their weight on his hind legs, their size almost pushing his thighs apart. They were the size of soccer balls, now! The only bigger ones he'd seen were on Horizon's stallionhood! Suddenly worried, he glanced back up at Horizon.

"Shouldn't my, uh, dick be growing too? Is there something wrong?"

Horizon shook his head, still grinning. "Don't worry—we're just sticking to one body part, for now. But you should start feeling it right...about...now."

Tiller gasped, his head going back as his balls surpassed watermelons in size. They were even bigger than Horizon's own, now—if he were to try to walk across the room, they'd nearly drag along the floor, carrying his churning seed every step of the way. At the very thought, a few drops of pre spilled from his dick. They were much larger than what he'd had before: In fact, one drop of pre, leaking from his tip, was fuller and whiter than his entire orgasm would have been before! His eyes opened even wider. His dick felt so full, with every drop pushing against his girth with its sheer volume. He glanced down at his balls and gulped; he could barely imagine the gallons of cum that waited in their depths.

He suddenly felt lightheaded, along with a powerful warmth that seemed to spread from his crotch until it filled his whole body. "I...I need..." he grunted, closing his eyes. He'd never felt this horny before—it was like an all-empowering need to fuck or to be fucked. All thoughts of life or anything else had fled from his mind, leaving behind only the gallons of cum churning in his balls and a powerful need for sex.

Tiller met Horizon's eyes, tensing his dick and unconsciously thrusting his hips toward Horizon's throbbing member. "I need to fuck you," he whispered.

Horizon blinked. Now this was something new. His eyes flitted down to his crotch—or, more accurately, to most of the way up his chest. After his own transformation, he'd gotten used to being the one on top; after all, what was the use of a gigantic cock if you didn't actually use it? Fucking, pumping ponies full of gallons of warm, steamy seed—that was what he did.

But apparently, Tiller wanted to try something else. And try as he might, Horizon couldn't find anything within himself that might object.

He glanced back down at the tip of Tiller's cock and licked his lips appreciatively. It was a nice cock—about the same size that he'd been before, if not a bit bigger—and it had a nice girth that he was...

He swallowed. ...That he was already imagining thrusting into his rump.

He looked over Tiller's giant, throbbing balls. Those nuts were, by now, larger than Horizon's own, constantly pumping thick streams of precum from Tiller's tip. It was no wonder the other stallion was so completely horny: The sensation and drive had to be more intense than anything he'd ever experienced! A small smile crossed Horizon's face—it was so often that he was the one giving that he couldn't help but wonder what it'd be like in the receiving end of one of those titanic horsecocks, filled to bursting with such a volume of semen.

Horizon met Tiller's eyes. "Okay," he said, quietly. "Just...go slowly, okay? I've never done this before."

Tiller bobbed his head up and down, eyes still wide. It was clear that he didn't care what he agreed to, so long as he was able to achieve release. Hesitantly, Horizon stood up, his own two-foot member heavy between his legs and his own engorged balls smacking against his sides, and turned around to present his virgin ass to Tiller.

He shivered as Tiller approached and began to run his hooves over his flank. Horizon didn't have a strong, or "sculpted" frame, but he'd done enough farm work on the side to at least have a lean, attractive backside. Tiller was taking a surprising amount of care, he realized—he hadn't just gone straight in. Still, the feel of the other stallion's touch was electric, Horizon's own dick expelling a thick glob of pre in excitement for what was to come.

Horizon grunted at a sudden pressure on his flanks, and then on his back. Tiller had raised his front hooves off the ground, getting ready to mount Horizon's backside as though he would a cart. This close, he could feel Tiller's massive balls pressing against the back of his legs—the backs of his hooves, even. In a moment of silence, just before it would start, he could feel the churning of semen from their giant depths, almost hear the sloshing of semen as Tiller's balls cried for release.

And then Horizon felt it: a pinpoint of pressure against his rump. It squeezed between his cheeks, probing gently toward his hole. He could feel it throbbing in need, slick as it was with pre. There was no doubt, at least, that it'd be highly lubricated: Tiller's balls were still putting out a tablespoon of precum a minute, and there was no doubt that there was more where that came from.

Horizon remembered the size of Tiller's balls, and then felt again their weight against his legs. A lot more.

Slowly, Tiller pushed against Horizon's ass, hooves guiding his cock into his asshole. Horizon let out a little squeak, giving a jerk of his hips as Tiller entered him for the first time, his well-lubed cock spreading his ass as it entered his virgin asshole. It may have been only an inch or two, but he could feel it inside of him: warm, full, and pushing against his slick walls. He remembered Lilydale and how wonderful, how tight, how arousing her ass had felt to him. Even with such a smaller cock—his own dick gave a throb of appreciation at the reminder—was that what Tiller was experiencing what now? That slow draw into a hole, but alongside a need to rut, to thrust, to fuck.

He let out a gasp as Tiller, perhaps unwilling or unable to wait any longer, thrust further inside until at least four or five inches of his cock were held by Horizon's ass. The curve of Tiller's balls, hanging heavily between his legs, pushed harder until they spread his ass for Tiller's view. Pre oozed out of Horizon's ass and down the sides of Tiller's cock, waiting patiently for the act to begin.

"Oh," Horizon murmured, feeling Tiller slowly slide a few inches out, and then back in. He was testing the waters, it seemed—seeing how well he could fit inside while inside Horizon. It seemed that he fit fairly well, which was a relief. For a moment, Horizon wondered at Lilydale's ability to take his immense size—even this much cock felt so tight to his unexperienced ass; what had his monstrous dick felt like while it was inside of her? Fill me up, she'd said. I want to take all of your cock.

And he wanted, he realized, to take all of Tiller's.

Tiller's dick slid an inch back until just the flare of his cock was still inside Horizon, pressing against the sides of his hole as his dick seemed almost to salivate pre onto the floor. "That feels so good," Horizon moaned. Tiller slid slowly in, and then back out. "So good..."

And then Tiller jammed his dick into Horizon's ass, thrusting so far up that he fully hilted his cock in Horizon's prime rump. Horizon let out a yelp—a squeal—as the sudden mass filled his rear, all seven inches pushing up his tract and dripping pre into him.

Tiller had gotten tired of waiting, it seemed.

Horizon's ears were filled with grunts, methodical groans as Tiller pulled out just as quickly before thrusting again. And again. Wet smacking sounds filled the loft as Tiller pounded Horizon's rump with every thrust, his massive balls, still churning with unspent pony cum, slapping against the backs of his legs.

Horizon moaned. "More..." he whispered, almost without even realizing it.

"What...was that?" Tiller grunted, hilting his sword inside of Horizon again. Horizon's eyes screwed shut: He wanted that pressure, that force inside of him—no, he needed it. "I...couldn't...hear you..."

"More!" he cried, leaning down lower to the ground until his massive dick was scraping against the ground, his balls smacking against each other as he presented his ass in full for Tiller's pleasure.

The other stallion wasted no time in taking his gift.

"Then...take it!" Tiller roared, and thrust even harder, even faster inside of him. Horizon's pupils became pinpricks as Tiller's girth pushed his tender asshole even wider, spilling additional spurts of pre inside of him and making each thrust come easier and more quickly. His breaths became heavy, the need for sex, to be filled dominating his mind.

Horizon jammed his rump backward just as Tiller thrust forward, the combined forces pushing Tiller's cock even further up Horizon's ass until it pushed against his inner walls. Horizon's eyes went wide: Tiller had found his g-spot, massaging and pressuring it until Horizon felt so filled with pleasure and desire that he was ready to burst.

In and out. In and out. It was like an endless cycle: Tiller would ram his cock deeper into Horizon, his throbbing cock almost vibrating his g-spot with primal need and lust, and Horizon would gasp and clench even more tightly around Tiller’s member. His cheeks clamped harder, increasing the sense of tightness and fullness. Horizon was pierced on Tiller’s dick, the latter’s balls slapping against his rear and teasing him with their seed-filled depths with every thrust, and he loved it.

The rate increased, the pleasure moving into a crescendo. Each of Horizon’s grunts echoed in the loft. He could have never before imagined the sheer sensation of taking a cock—perhaps at one point, he would have deemed it “for mares only,” but by Celestia, this feeling was so amazing that he would gladly experience it every day.

“Take it!” Tiller said again.

Horizon moaned; precum was dribbling from his tip at a faster, thicker rate. His taint convulsed, tightening and releasing with every heartbeat, his dick tensing and thrusting into the air with each pound of Tiller’s cock against his tender flesh. The pressure—that familiar, forceful pressure—was building up at the base of Horizon’s cock again, his balls churning as they pressed against Tiller’s own, even more massive testicles.

“F-fuck me,” Horizon choked out. “Fuck m-me harder.”

Tiller obeyed without a second thought. Then—

“I’m cumming!” Horizon moaned. He could feel the cum pressing against the sides of his balls, sloshing as it channelled its way up his dick—

“Euragh!”

Tiller let out a cry even as the words left Horizon’s mouth—and the precum stopped.

Horizon’s eyes widened.

With Tiller’s cock still fully hilted inside of his ass, Horizon felt a tighter…something pressing against his hole. It was thick: hard, and with a much, much wider girth than the rest of Tiller’s member. He groaned as it pushed and pushed against him, the force building behind him.

At the other end, Tiller was feeling a pleasure that he’d never felt before. Every orgasm that he’d previously experienced had been like a jolt of electricity: a sudden gasp of pleasure that sent shivers running up his spine. This was difference. His balls—his massive, gigantic, swelling balls—felt almost alive in the sheer power of their unspent seed. This orgasm came on less as a jolt and more as a rising tsunami, pushing against the base of his dick as though it were a hurricane trying to break through a much smaller dam.

He let out a cry, his back arching, as his seed broke through, flushing through his length and building up in a knot behind Horizon’s tender asshole with monstrous force. The pressure built up more and more, Tiller’s dick swelling out wider than he could have ever imagined as only a bit of cum leaked through, his balls supplying more and more until it burst—

And burst it did. With another cry that sounded like the moan of a dragon in heat, Tiller felt all of the pressure flood through his dick and rocket out the tip, rushing straight into Horizon’s ass and filling him with his thick, steamy seed. Horizon moaned as he felt it, yet for Tiller, it was an unfathomably powerful experience. He was barely aware of Horizon’s own cock spilling pints of cum onto the ground, its two-foot length throbbing in the throes of orgasm, as his own took him and held him tight.

For Horizon, his balls had grown with his cock, so even when one of his titanic orgasms overtook him, there was enough increase in space and volume to be able to handle it in what was, at the very least, a mostly similar way to what he’d had before, albeit with much greater sensation.

Tiller, on the other hand, had retained his “small” cock even through the growth process. With gallons of cum bursting from his balls, there was only a singular, tight channel for them to flow through. His breaths came in short, labored gasps, his eyes nearly rolling up into his head as the pleasure—that feeling of tightness that filled his cock. It was an impossible, enormous force—something that couldn’t be contained—and with each pump of cum into his dick and down its length, Tiller felt like his member was about to burst.

And burst it did.

His hips rolling, thrusting, and pounding into Horizon’s ass, Tiller’s cocked pumped pint after pint, gallon after gallon of thick, warm seed into him. Horizon let out a cry, feeling Tiller’s cum fill him up from behind. It was an unstoppable force: a wave of seed that crashed against his insides until it filled him completely.

And yet it continued on, Tiller’s balls spilling more and more inside of him until Horizon felt like he could take it no more. He felt cum sloshing inside of his gut, travelling all the way through him until it reached his stomach, swelling him outward and filling him even further.

Horizon’s stomach swelled, the pressure building inside of him as his own orgasm subsided, though Tiller’s continued on—redoubled, even, it seemed, with even more force and cum than he would have thought believable. Those enormous balls pounded against his back as his stomach grew and grew and grew, filling with seed until it hung low beneath him, his skin and coat straining as his gut filled with more and more pony cum.

After what felt like an eternity, Horizon felt the flood begin to subside. His stomach groaned, hanging so low beneath him as to push his massive dick to the ground, masturbating it further and coaxing out a few more spurts with its weight and size. It bulged out, pushing against his thighs and weighing on his balls as gallons of warm seed sloshed inside of it. With a grunt and a moan of pleasure, Horizon, completely spent, dropped to the ground, his full stomach squishing beneath him.

Tiller slowly pulled out of him, the last remnants of cum dribbling out of his tip. He was panting, his formerly engorged balls looking oddly shrunken, even though they remained a good three times their original size.

“...Wow,” was all he could say.

Horizon closed his eyes, loving the feeling of being full. It was something he’d never contemplated before—he didn’t even have a stomach ache. Instead, he felt warm, holding every ounce of Tiller’s seed inside of him like he imagined Chestnut and all the others had for him.

“Wow,” Tiller said again, gazing down at his still-massive balls. “That was…”

“Incredible?” Horizon offered, still lying in wonderment on his swollen gut. “Wonderful? Amazing?”

Tiller looked up, looked down, and then back up.

“...Yeah,” was all he could say.

Then he blinked.

“Wait,” he said, staring down at his gigantic sack. “How am I going to deal with this? I can’t walk around with two giant nuts hanging off of me all the time.”

Horizon smirked. Idly, he wondered if Chestnut would be in her lab right now.

“Oh, don’t worry,” he said lightly. “I might have just the solution for that.”

Chapter 5: Three's a Crowd [M/F/F] [Hyper Cock] [Cock Growth] [Cum Inflation]

Horizon stood hesitantly outside of Chestnut’s house. Hovering beside him was a note, clad in the bright green glow of his magic. It was this note that had prompted the visit along with the trepidation in his eyes.

It read:

Horizon—

I’ve been working all week on analyzing that sample you gave me. Your magic really is incredible—it rearranges things at a cellular level!

In any case, I think I might have a spell that will let you shrink your “equipment” back down once you’re done using it. It might make things a little less inconvenient for you. If you’re interested, drop by tomorrow afternoon, and we’ll try it out.

—Chestnut

Biting his lip, he lifted one hoof and rapped three times on the door.

Knock, knock, knock—

Not a second after the final knock, the door swung open. A small grin flitted onto Horizon’s face, and he opened his mouth to say hello—

“Who’re you?”

Blue coat, orange mane. Piercing black eyes. A voice that sounded anything but happy to see him.

In other words, not Chestnut.

Horizon did his best to stammer something out—what was going on? had he come to the wrong house?—as the mare stared him down.

“Well? Can you talk, or—”

“Marigold! What are you doing?”

There was a familiar voice. Horizon instantly relaxed as a friendlier face came into view: Chestnut, her mane bouncing over her shoulders as she trotted to the door. A white lab coat hung over her back, and there was a clear frown on her face.

“I told you to let me get the door,” she scolded the other mare—Marigold, Horizon guessed. In a flash, the scowl was gone, to be replaced by a wide, beaming smile as she peered through the door at him. “Horizon! Good to see you—come right in!”

“Good to see you, too, Chestnut,” Horizon said. He stepped through the door and gave her a quick hug.

“So he’s that guy, huh?”

Pop.

Horizon looked up. There was a sticky, pink mess covering half of Marigold’s face. As he watched, she stuck her tongue out and lapped it all up, smacking her lips as she chewed on her gum.

“That guy?” he asked dumbly.

Chestnut sighed, brushing her mane out of her face. Horizon blinked after her—had she been blushing? “Yes. I managed to let slip that I was taking a look at your...problem—”

Marigold snorted.

“—and she all but demanded that I let her come.”

“Demanded? Chestnut, your memory must be going,” Marigold scoffed. “I asked nicely, what with you seeming so excited and all.”

Chestnut shot her a dirty look, but turned back to Horizon with a smile plastered on her face again. “Anyways, I hope you don’t mind. She’s promised not to be a bother.”

“She has?” Horizon asked. He frowned toward Marigold.

She was scowling. Though she was rolling her eyes, she gave a nod nonetheless. “Yeah, yeah. Just get on with it.”

“On with what?”

Marigold popped another bubble and chewed. “C’mon, get your thing out. Your dick. Your wang. Your—”

“I think he gets the picture,” Chestnut cut in, adjusting her glasses. “But yes, Horizon—if you’d like to learn to perform the spell, then we’re going to need you...well, ready. Exposed.”

“And if what half you’ve told me is true,” Marigold said, “then I doubt you’ve got any problem with that.”

Chestnut flushed.

“Hey! Cut it out!” Horizon said. He took a step forward, ignoring the familiar smack of his cock against his thighs as he moved. “What’s got you all stuck up your own ass like this?”

“Oh, he’s got some attitude.” Marigold licked her lips. “I like this one. Maybe I’ll just have to try him out myself. Now, let’s see that fabled ‘Wonder-Cock’ of yours.”

Horizon opened his mouth to reply, but Chestnut cut him off. “All right, all right. Everypony, just...relax, okay? Horizon, I’m going to need you, well—” she coughed—”hard for this. Otherwise, the spell might not take.”

Horizon felt his cheeks color, and his eyes darted back over to Marigold. She was still watching him, eyes narrowed lewdly. She popped another bubble, running her tongue across her lips, and he shivered.

“Okay, then,” he said doubtfully. “And you’re sure that this spell will work as you said? It’s, uh—”

“—reversible?” Chestnut nodded. “It should be. There’s no reason you shouldn’t be able to just use your natural growth magic to set it back. Think of this spell as just...well, folding it away.”

Horizon nodded. Eyes flickering over Chestnut’s form, he took in the curve of her body, her taut, rounded bubble of an ass. Unconsciously, he ran his tongue over his teeth as he remembered that flank in his hooves, his shaft pounding into her depths as he filled her with his hot, steamy—

Horizon blinked and peered between his legs. Sure enough, he felt a heavier weight dangling there. His horn flickered, and the invisibility spell fell away, revealing his massive, churning balls and his swollen, throbbing member.

He chuckled awkwardly, eyes darting back over toward Marigold, who’d retreated to a corner just to watch. She was leering at him—rather unpleasantly, really—and with all of the blood running to his groin, he decided that he might as well give her something to leer at.

With a grunt, he plopped himself back onto his flank. His member came up with the rest of his underbelly, bobbing at full mast and sitting atop his gargantuan balls. A small drop of precum had already gathered at the tip, and he shivered as it fell to the floor.

He looked back toward Marigold—and nearly burst out laughing. The mare was no longer leering; if anything, she looked downright dumbfounded. Too shocked to speak, perhaps?

Horizon grinned. Then again, seeing a two-foot-long cock tended to do that to quite a few ponies, especially when said dong was thicker around than their necks.

“Excellent!” Chestnut said. She licked her lips; Horizon could see the blush rising above her cheeks.

She looked...hungry.

“Let’s get started, then,” she said, coughing. “Time for you to learn a new spell.”

"Are you ready to give it a try?"

Horizon nodded. Biting his lip, he pushed a thin trickle of magic through his horn. It lit up, glowing an eerie green, and he molded it into the shape she'd shown him.

Pop.

With a start, he realized that the magic was gone. The spell had finished: disappeared. With wide eyes, he peered down between his legs.

His monstrous cock, standing proud at two feet in length, and nearly as wide around, stood defiantly above his still-churning balls.

"Good job," Marigold said, leaning against a wall. "Looks like it worked wonders."

"I don't understand." Chestnut took a step forward, frowning. She reached out and laid a hoof on the tip of Horizon's flared cock; he nearly shuddered with pleasure at the touch. She felt so warm, so soft—

"It should have worked," she said, frowning. "What went wrong?"

"It's alright," Horizon assured her. Truth be told, he almost felt relieved. He knew perfectly well that the spell would have been reversible, but he had to admit that he'd become used to that heavy weight between his legs. Without it, he would've felt completely off—

"Wait!"

Eyes going wide, Horizon and Chestnut stared down at the former's giant cock. Sure enough, it looked like the tip had receded a bit; as Horizon watched, a shimmer of green light ran down its side, and his dick shrank a bit more.

"It worked!" Chestnut cried.

"It did," Horizon said.

Wow. This felt...weird. His formerly twenty-four-inch dong was now barely eighteen, and it looked to be still shrinking. He felt a pulse of warmth on the tip of his horn, and with a start, realized that the spell was still active.

It hadn't died. It'd just needed a few moments to get started.

Sixteen inches. Fifteen. His dick was still shrinking. His libido wasn't going with it, some backward corner of his mind noted with a shrewd little snicker. His balls had gotten smaller, looking more like grapefruits than basketballs, but it seemed that his body had accustomed itself to a certain level of...stimulation. A few more drops of precum leaked from Horizon's tip as he hit fourteen inches, still going down.

Not a moment too soon, Horizon realized that he'd reached—and passed—a foot in length. His cock looked much smaller—though it was certainly larger than many other stallions' endowments—but he couldn't bear the thought of going back to his feeble seven inches.

Feeble—a few months ago, he would have laughed at the idea. Yet all the same, with another flicker of magic and a grunt of exertion, the shrinking stopped, the glow of magic fading. He stopped with just over ten inches of thick, stallion meat remaining, panting from the effort of the spell. It might not be enough to pierce through a mare and come out the other end—he could feel his boner throbbing appreciatively at the thought—but it was a more-than-respectable size.

If he had to make himself smaller for convenience's sake, it might as well be with a size that he could live with.

"Well," he heard from beside him. He was still staring intently at his cock, watching as the last flickers of magic vanished into the air. "That's one way to shrink a cock. But I think you forgot something."

Horizon blinked—and then noticed the two grapefruit-sized nuts sitting between his legs. Even at their reduced size, they were still large enough to push against the sides of his legs, and the size differential between their width and his shrunken cock looked almost freakish. Blushing, he quickly whipped out the spell again—it came easier this time, more naturally—moaning as he brought his two testicles back down to size.

Marigold smirked from her place in the corner. "You got there in the end," she cooed. "Looks like Mister Big-Dick ain't so big anymore."

"Oh, I don't know," Chestnut said, elbowing her. "He still looks pretty nice to me." She licked her lips.

Horizon chuckled and flashed Chestnut a smile. It was true that his cock was nothing to laugh at—even at less than half its previous size, it was definitely a dick to be proud of. Getting back to his hooves, he stumbled slightly and overbalanced.

Chestnut caught him with one of her forelegs, keeping him upright. "You okay?" she asked.

Horizon flashed her a sheepish grin. "Yeah," he said. "I'm just used to having more, uh, weight there, I guess. I'll get used to it."

Shclick. Schlip.

Wet, smacking sounds echoed through the room. Horizon blinked, meeting Chestnut's eyes. She silently shook her head.

He frowned. He could swear that he could hear something dripping as well...

"Mm... That's good..."

"Marigold!" Chestnut said, spinning around on one hoof. "What are you doing?"

The other mare, who had one hoof conspicuously placed between her back legs, looked up and grinned at her. "What? A girl can enjoy the view, can't she?"

"But—"

"You said it yourself—it's nothing to sneeze at. And besides," she added, her voice moving to a lower, more sultry tone as she stared at Horizon with heavy-lidded eyes, "it's been a while since I've had a stallion."

Horizon felt the blood rushing straight back to his groin. Who cared if he wasn't big enough to stretch her pussy to the breaking point, his stallionhood seemed to be asking. He could see the puddle forming beneath her dripping marehood with each stroke of her hoof, and could smell her scent, intoxicating in the stale air of the house, filling his lungs with each new breath.

He swallowed, trying to look a bit less flustered. "I, well—"

"What's wrong, 'big boy'?" Marigold purred. She removed her hoof—still dripping wet—and took a step toward him, flittering her eyelashes. "If I'm to believe half the tales going around the farm, there's no way you haven't seen a mare before. Especially not with what this naughty little filly's told me." She nodded toward Chestnut, who blushed an angry red.

"Not that I would mind," Horizon said quickly. "I...are you sure?"

Marigold licked her lips: sensually, running her tongue across her mouth slowly, deliberately. "Oh, like I said—it's been a while. And you're still a good enough size to stretch me just as much as one of my toys."

"I really should have expected this," Chestnut muttered, hoof on her forehead.

"So what do you say?" Marigold asked with a wink. "You up for some playtime?"

"I—" Horizon's word hung in the air, but he bit his lip and nodded firmly. "Yes."

A cheeky grin split his face in two. "The question is, are you ready for me?"

Marigold threw her head back and laughed. "Oh, I like that—a stallion with some backbone."

She smirked back. "Now, let's get a taste of that sweet-looking stallion meat."

"I—" Horizon began, but Marigold was too close, too aroused, and his dick too well-displayed to stop her in time. Her tongue ran across her lips, and in a single fluid motion, she bent down before him, his ten-inch member throbbing appreciatively at her touch.

He shuddered as she took him roughly in her hooves, his hips jerking involuntarily at the contact. A thin line of saliva dripping from her mouth, Marigold met his eyes. There was a hungered, crazed spark there—and without another moment's hesitation, she dove down and took him into her mouth.

A long sigh escaped from his chest as her moist cheeks descended around his stallionhood. It felt...strange, really to be so small. He needed to be filling her mouth, pushing her jaw so far apart that it would crack—but here she was, fitting his flared head easily into her mouth as her agile tongue lubed up the sides, swirling around his length. He groaned, eyes fluttering as her hooves played roughly with his balls.

With a wet-sounding shclick, she slid off the top of his cock and grinned up at him with heavy-lidded eyes. "Mm. You liked that," she murmured, "didn't you?"

Horizon nodded. His sensitive member gave another twitch and he whimpered as a line of saliva dripped down from his tip.

"Mm," Marigold said again, that glint returning to her eye. "Let's get you all nice and lubed up, shall we?"

And with that, she descended again onto his cock, fitting a whole five inches in her mouth—a full half of Horizon's new length. Horizon grunted, feeling her eager tongue lapping around his medial ring—and then moaned loudly as Marigold pushed herself even farther down until she was deepthroating his cock.

It felt so good—her movements were jerky, her motions sloppy and without finesse, but something about Marigold's roughness just set him off to no end. In the corner of his eye, he could just barely make out Chestnut standing against the wall, her own hoof rubbing madly against her clit as she bit down on her lip.

Horizon squirmed as Marigold went up and down his cock, taking every inch in and pushing it back out of her mouth before shoving it back in. It felt intense—she was squirming, pushing on top of him as she deepthroated his length.

Somewhere in the back of his mind, his pleasure triggered something. He wasn't entirely aware of it, but as he moaned for the next time, Marigold's lips bumping up against his swollen balls, a thin sheen of green light shimmered across his horn.

It was a few moments before Marigold realized that she was getting more of a mouthful than she'd expected. Horizon's cock felt more...solid than when they'd started. Fuller.

One might even say that it felt...bigger.

Just as she was about to poke her head back up to make some snide comment about his ego, she felt a pressure on the back of her neck. Horizon had wrapped his two hooves around her head, and with a single, powerful motion, forced her back down until her lips met the base of his stallionhood. She sputtered for a moment as his ring forced its way through her lips, his balls brushing against her cheek as she turned her head to the side.

The green glow intensified, and with a single, horrifying thought, Marigold realized that Horizon's cock was growing—and it didn't seem to be stopping. Fourteen inches now if it was an inch—there was no way she'd be able to remove herself now, not with his girth pushing against the sides of her jaws and his hooves on the back of her head.

It swelled even further as his hooves forced her down, and she sputtered again, her drool speckling the top of Horizon's sack. She was choking on his cock; its girth was so wide, its length so enormous, that it'd become lodged behind her tonsils, the very contractions of her throat masturbating him with a warm and moist touch.

Horizon moaned as a generous spurt of precum spurted from his tip, falling straight into Marigold's stomach without any resistance from her mouth. His member filled her entirely, choking her with pure size.

The orgasm was coming. He squeezed his eyes shut, his member growing until it was nearly a foot and a half in length, and with every single inch squeezed inside of Marigold's choking throat.

With a cry of pleasure, he felt the orgasm strike him, like a bolt of lightning running up his spine. Pints of cum exploded from his tip, running through his swollen, flared head and exploding past Marigold's tonsils and down into her stomach. She let out a muffled cry, squirming beneath his grip as each new cup of spooge entered her stomach, filling her and producing a small bulge.

Panting, Horizon felt his orgasm end. His cock had already begun to wilt with the end of it, his hardened member receding until it gave Marigold barely enough room to breathe. She choked—coughing, even louder, until she spat his length from her mouth, wheezing in the warm air.

"What the fuck," she spat, "was that?"

Horizon's eyes were still closed, but as he cracked one open, he noticed his hooves clasped around Marigold's head and his massive cock resting against her chest. "Oh, gosh," he began, eyes going wide. "Marigold, I'm so sorry—I never—"

"That," she said, eyes reddened, "was—"

She paused and coughed one more time.

"The hottest fucking thing I've ever felt."

Horizon startled. "Wha—?"

Marigold was beaming, a few lines of saliva still running down her cheek and mixing with lines of his seed. "That was fucking intense," she said. "That fucking cock, I swear—I choked on that thing! And this is as big as it gets?"

"Bigger," he admitted sheepishly. Marigold looked at him in astonishment before a wicked grin crept over her face.

"Well, then," she said with a smirk, putting her rounded belly. "We'll just have to try another hole, then, won't—"

"Oh!"

Both heads turned to face Chestnut, who by now was slumped over the floor, hoof pushed firmly against her marehood. Her eyes were wide, her mouth hanging open, and her hooves shook as the orgasm took her. Horizon's nose twitched, and he felt another surge of arousal in his once-again oversized cock; he could almost taste Chestnut's arousal in the air, could smell her desire through the juices that dripped from her pussy.

Chestnut moaned again, her eyes drifting closed as her hoof slapped against her feminine lips. “Oh,” she murmured. “Oh, yes. Oh…”

As the last throes of her orgasm left her, she stopped—blinked—and turned, wide-eyed, to face the other two.

She blushed so hard that her face looked like it was on fire.

“I, oh, my,” Chestnut stuttered, removing her now-damp hoof. “I’m sorry, I just—”

“You liked that, didn’t you?”

Marigold’s smirk spread until it covered her entire face. She licked her lips, meeting Chestnut in the eye. “I’d say just as much as Dick-Colt over here. You were totally perving on us.”

Chestnut nodded mutely.

Marigold licked her lips, a glint in her eyes. Before anypony else could react, she’d pushed herself forward—

—and landed right with her mouth right over Chestnut’s.

Chestnut let out a yelp before giving into the kiss. Marigold’s weight pressed down over her, and she could feel her rounded belly pushing into her own, still able to hear Horizon’s cum sloshing around inside.

Marigold ground her snout into Chestnut’s, taking in her scent. She probed outward with her tongue, poking into the inside of Chestnut’s mouth.

Chestnut moaned, shifting beneath Marigold as their tongues met, dueling as saliva dripped between their mouths. Her marehood, still dripping wet, rubbed against Marigold’s leg as the latter ground her own clit into Chestnut’s stomach. Marigold’s pussy, still wet with arousal, dripped over Chestnut’s coat, soaking into her fur.

Back on the other side of the room, Horizon watched the exchange with wide eyes—though certainly not with disapproval. His hoof ran up and down his own length, almost unconsciously, as his monstrous cock stiffened back to full height. The magic returned, his dick growing with each new stroke of his hoof, until it had reached two full feet of stallion meat once again, his gigantic balls churning with seed beneath him. Slowly, tenderly, as Marigold shifted her weight and buried her snout in Chestnut’s clit, Horizon leaned over and gently licked a thick clump of cum off of the tip of his cock. It tasted salty, and he shivered with pleasure as he swallowed his own seed.

His eyes drifted over to Marigold’s taut, rounded flank, and he felt his returning boner throb in appreciation. Maybe…

Chestnut was in high heaven as Marigold’s tongue probed her marehood, invading her every nook and cranny. Sweat beaded on her forehead, and her own tongue hung out of her mouth as she panted in pleasure. “Oh, goodness—more,” she moaned. “More, more, more!”

Marigold, evidently, was only too happy to help. “Mm,” she grunted, kissing Chestnut’s marehood on the lips before going back to ravaging them. “You taste...delicious.”

Her eyes widened as she felt a sudden pressure against her rear end. She didn’t stop licking Chestnut’s moist cunny, but her eyes then narrowed all the same.

That same weight prodded against her behind once again, and Marigold recognized that familiar feeling of girth. She could feel two orbs pressing against the backs of her legs, could hear that slight whimper that escaped from behind her.

“So you want your turn with the other end?” she said, pulling up from Chestnut’s crotch and wiping her lips.

Horizon grunted from behind her.

“Then go ahead,” Marigold murmured lustily, looking Chestnut right in the eye. “Fuck me crazy. Let’s feel that godlike cock of yours.”

She dove in for the kiss, her tongue intertwining with Chestnut’s—and Horizon took the initiative.

He was slow at first, gently pushing his enormous head between Marigold’s legs as she squirmed on top of Chestnut. Yet, for whatever reason—perhaps she was loose from other stallions, or simply too many nights spent alone with her own “toys”—she was loose enough that he could fit the entire head in.

Horizon grunted as he entered her marehood, feeling her pussy juices dripping down his throbbing member. The feeling was so electric that some corner of his mind reacted instantly, a green light flickering over his length as he slowly drove his cock deeper into Marigold’s pussy. His member expanded even further, his oversized balls all but screaming with horniness, with a need to spill their seed inside of this amazing, fuckable mare.

On and on his cock grew, twenty-five, twenty-seven, thirty inches—until it was poked right up against Marigold’s cervix, with an entire quarter of his cock still left outside.

In and out he thrust as Marigold and Chestnut dueled, their mouths locked together in a neverending embrace. Flesh smacked against flesh as Horizon fucked Marigold silly, his enormous member going so far in as to leave her stomach bulging with his sheer size.

Marigold had never felt so full. Horizon filled her completely; as she looked down, she could see her stomach rounded even more. Watching her swelling belly, her eyes widened as that bulge disappeared—and then pushed forward again. Horizon grunted behind her, and she moaned.

“Oh, fuck,” she bit out, pulling away from Chestnut before the latter hungrily seized her head and pulled her down once more. “Mm. Oh. Mm.”

It felt like nothing she’d ever felt before. She pushed against Chestnut, grinding her lover’s pussy beneath her hoof. She could feel the heat between her loins intensifying, her arousal peaking to insane levels. Jolts of electricity began to sizzle up her spine, preparing her for the bursting orgasm that was to come.

Horizon’s eyes rolled up into his head as he fucked her like a cocksock. In and out, flesh smacking against flesh—her tender, abused ass filled his vision entirely, making him hornier than ever. His balls grew until they rested on the floor, his cock growing a few more inches until the bulge refused to disappear from Marigold’s stomach. He groaned, biting his lips as he felt the tension building—

“I’m—”

Marigold moaned. “—cum—”

Chestnut let out a cry of pure pleasure. “—ing!”

All three came at once, their orgasms striking them like bolts of lightning right down the spine. Chestnut’s pussy flooded with juices, her femcum dripping down onto the floor and drenching Marigold’s hoof.

Marigold’s back arched as hers hit, the fire in her thighs burning up until it held her entirely. She drove herself down with an enormous intensity, licking, biting, kissing every inch of Chestnut’s body as she rode the orgasm, pulling it out to a fiery, burning finish.

Horizon’s eyes nearly rolled back into his head, his hips rolling and bucking as his seed spilled out into Marigold’s womb. He flooded her pussy, her cervix, coating every cubic inch of her insides with his warm, sticky seed. Her belly bulged out from his monstrous cock before flooding out even more with his gallons of cum. His balls churned between his legs as her stomach expanded until Marigold looked pregnant with foals. She let out a cry, fuller than she’d ever felt before, as Horizon thrust again and again, filling her until his warm spooge leaked out of her marehood and onto the floor, leaving a sizeable puddle behind.

“Oh,” Chestnut moaned. “Oh, Celestia. Oh, Celestia.”

Slowly, waiting as his cock spurted out a few more thick ropes of cum, Horizon pulled back out of Marigold, leaving her to collapse onto Chestnut’s warm body as her own distended stomach squished and jiggled beneath her.

“Oh, fuck me,” Marigold moaned. “That was…”

“Amazing?” Chestnut offered.

“Intense?” Horizon murmured, gazing at his enormous, two-and-a-half-foot cock.

Marigold turned to look at him with heavy-lidded eyes. “Got it in one, dickboy,” she whispered. “Fucking intense. Intense as fucking Tartarus.”

Another shiver of pleasure ran up Chestnut’s body, and she struggled to pull herself to her hooves. “...My,” she finally said. “I never expected that.”

Horizon chuckled weakly, getting to his own hooves. “I probably should have. It seems to come with the package.”

Marigold smirked at him. “Package? That was a terrible pun.”

She looked down and slapped her rounded belly, which was bulging with gallons of his seed. “So this is what fucking you does to a mare, hm? Let’s see how long it takes before I can walk this off.”

Chestnut snickered. “Good luck with that.”

“Watch me.”

Marigold turned to face Horizon, a genuine smile tugging at one corner of her face. “Come back ‘round any time,” she said with a wink. “I’ve never gotten fucked like that before.”

Horizon nodded dumbly.

“Now, if you’ll excuse me,” she went on, eyeing Chestnut hungrily, “Miss Science and I have some...washing up to do. Let’s hit the showers, hm?”

Chestnut shivered as Marigold ran her tongue across her lips. “Oh,” she said quietly. “Oh.”

Horizon could take a hint.

As he got up to go, doing his best to brush off any clinging fluids, Marigold turned around and gave him another wink. “Oh, and lover-boy?”

He paused.

“There’s a party going on tomorrow night at the bar in town. Something tells me you might want to hit it.”

A grin spread across Horizon’s face. A green glow spread out from his horn, shrinking his package back down to a more manageable size. He turned to beam back at the two mares.

“Something tells me,” he said, grinning like a foal, “that you’re right.”

He winked back. “I’ll be there.”

Chapter 6: Another Drink [Orgy] [Hyper Cock] [Hyper Balls] [Cock Growth] [Everything Expansion] [Giant-er Cock] [No Really It's a Fucking Enormous Dick]

Horizon leaned back in his seat, a soft blush already spreading across his face. A tankard, half-empty and frothing with alcohol, sat on the table in front of him. Somepony—Blaze, probably—had brought in a set of speakers and had cranked the volume until the floor itself vibrated with every beat.

“So,” he heard from the seat beside him, “how’s your bet coming along?”

Horizon turned and blinked. Sitting beside him was no less than Plowshare himself. The older stallion cradled a much larger mug to his chest, and was leering at Horizon rather unpleasantly. “Hit it off yet?”

“I, uh,” Horizon stammered. “Yeah! Yeah, I have.”

Plow snorted and turned back to the bar. “Can’t say I don’t believe you. After that little show you put on that night, I think half the room wanted you right then and there.”

As the larger stallion pressed his mug to his forehead, Horizon felt a tap on his shoulder.

“Excuse me,” the mare behind him asked, fluttering her eyelashes. “But I couldn’t help overhear—do you think that I could see it for myself?”

Horizon was barely buzzed enough to have forgotten her name—Apple Cobbler, he remembered after a moment of unsteady thinking. Manager of Cherry Dun Acres’ admittedly small apple orchard.

A small grin spread across his face at the question. Like it or not, he couldn’t deny that the new interest in his “package” had a tendency to give him a shot of voyeuristic adrenaline—especially when everypony seemed so forward and unashamed about it. Or, in Apple Cobbler’s case, it may have just been the three empty mugs of cider sitting clustered on the bar in front of her.

Horizon did a fake double-take over his shoulder. “Okay,” he said quietly, still smirking, “but you’re gonna have to keep it down-low, okay?”

Apple Cobbler hiccuped. “Oh, you got it. Now let’s see your prize sausage.”

Horizon put a hoof around her shoulder and, drawing her in closer, pushed a trickle of magic through his horn—just enough to release the invisibility spell. It might’ve been easier just to shrink his package back down before coming, but on a whim, he’d decided to leave it as it was.

Besides, at a social gathering like this, it was comforting to feel that heavy weight between his legs. It let him stand a little taller, as superficial a point of pride as it may be.

“Three,” Horizon murmured, grinning into Apple Cobbler’s eyes. “Two. One—”

His horn glimmered green—and with a dim flash of light, the lump between his legs was bared for all the world—or at least Apple Cobbler—to see.

“That don’t—don’t l-look like much,” she slurred. Twelve inches of flaccid stallion meat sat coiled in Horizon’s lap, directly over a pair of throbbing, oversized nuts.

“Just give it a minute,” Horizon said. He took a hoof away from his cider and ran it slowly down the length of his member. Rhythmically, gently, his hoof probed over his flaccid cock until blood began to flow into it.

The veins bulged, his shaft swelling with arousal as his hoof continued its foray up and down its length. He made a circle around its girth as soon as it stood up straight enough to do so—and then another circle, loving the feel of pure size and width beneath his hoof. Already his half-flaccid meat had passed fifteen inches in length, and it showed no sign of stopping.

His cock soon made it into a show of its own, swelling and growing until it poked up past his torso. All the while, Apple Cobbler watched with wide-eyed amazement, letting out “oohs” and “ahs” as it creeped up toward his chin.

“What do you think?” Horizon asked huskily, unable to keep a note of pride out of his voice.

“I’ve seen some other stallions before,” Apple Cobbler said in a low voice. She leaned over his towering member, her eyes blank as if entranced. A thin line of drool slipped from her mouth. “But this—this is a real cock.”

“So,” Horizon said, “would you say that it—ooooooh.”

He moaned softly as Apple Cobbler’s lips brushed against his tip. His flared head throbbed appreciatively at the kiss as a trail of saliva traced down its length.

“I’ve never seen anything—mmm—like it,” Apple Cobbler murmured, tracing down his length with one hoof. She opened her mouth and, slowly, licked around the base of his head, drawing her tongue tight beneath his flare.

“Unnngh,” Horizon moaned. His legs twitched uncontrollably at her touch, his sack already churning with new seed. “I guess...you know what you’re doing.”

“Mmm.” Apple Cobbler licked her lips, leaning in closer until Horizon’s shaft filled her vision. “Just sit back, big guy…”

“Hello, handsome.”

Horizon’s mid-arousal moan was interrupted by the voice of a new arrival.

“Lily,” he gasped, recognizing her almost immediately.

Lilydale smiled up at him from below his barstool. “I see you’ve already found somepony new to share your little gift with. I can’t say I’ve forgotten your gift to me.”

Horizon’s flickered toward her rear. Lily’s forehoof rested on one of her oversized cheeks, tracing across the length of her overinflated Cutie Mark. As he watched, she slapped her easily-reachable ass, his dick throbbing appreciatively as an ocean of ripples shuddered away from the point of impact.

He bit his lip, his balls churning even harder with Lily’s arrival. Nervously, he glanced over his shoulder, remembering that Plow was sitting right behind him. “But Lily—your—”

“Oh, Plow’s already gotten more than his fair share of my new assets,” Lily said huskily. “It would be fairly hard to hide them, no? I suppose it’s good for you that he liked them so much that he just couldn’t get enough for himself.”

She leaned in closer. Horizon leaned down close enough to let her whisper into his ear. She bit gently on his earlobe, sending a shiver down his spine before whispering,

“Truth be told, I think he’s wishing for you to share that magic spell of yours around a little more—if you know what I mean.”

Someone snickered.

Horizon looked back up, wide-eyed, at the rest of the bar. Seemingly every eye in the room was on the three of them—on Apple Cobbler, her two hooves clutching delicately around Horizon’s member; on Lily, her enormous ass still wobbling like a bowl of gelatin; on Horizon himself, his monstrous shaft throbbing with need and lust.

Off in the corner, a stallion turned and faced the mare beside him—his wife, Horizon remembered, struggling to recall their names.

“I am so fucking turned on right now,” the stallion breathed—and leapt across the table and pushed his wife to the floor. She moaned as his weight pinned her down, the two bodies writhing as the mare nipped at her husband’s neck.

At least a half-dozen stallions scattered throughout the room were masturbating, their jaws firmly clenched as they stared down Lily’s wobbling, jiggly flank. Horizon should have been mortified. He should have been embarrassed—any reasonable stallion would have been more than ready to withdraw.

Yet the only thought that came to mind was, What in Equestria was in that cider?

“Now,” Lily said, fluttering her eyelashes. “It looks like your little friend here is having some trouble with your...well, ‘little friend.’

“No offense, dear,” she said, turning to Apple Cobbler. “But perhaps a mare who knows how to handle all of that meat should step in to help you out.”

"Another round!" Horizon heard himself say. "On me!"

A cheer went up around the bar. Horizon felt his grin creeping upward as Apple Cobbler peered up at him from the base of his dick, her eyelashes fluttering as her tongue teased his meat.

Tankards clinked and chatter resumed around the bar. Horizon chuckled to himself, shivering again as Apple Cobbler's tongue touched his cock.

"Here," Lily murmured, pushing against Apple Cobbler and lifting her eye to Horizon's shaft. "Allow me."

Horizon moaned as Apple Cobbler's tongue licked along his flared head, Lily's hooves prodding and massaging at his throbbing balls. His nutsack churned appreciatively, its full depths always ready to release another deluge of hot, steamy cum.

"Fuck me," he heard—Horizon's head turned, and he saw Tiller flying through the air. He'd pounced another stallion, his enormous balls dragging across the floor and weighing upon his all-too-willing victim's chest.

Everything went wild.

"Mm," Lily murmured, blinking innocently up at him. "It seems you've started a trend."

"It's not my fault...mmm...if a few ponies decide that they want to have some fun." Horizon grunted, his eyelids fluttering as she squeezed his nutsack again. "...Unf"

A group of ponies in the corner had started what looked to be a threesome as another stallion jacked off to the side. With a start, Horizon realized that one of the ponies involved was Chestnut. A wide, vacant smile covered her face as she teased another stallion's shaft between her asscheeks.

A flush rose up on his cheeks—jealousy. How could another stallion satisfy her? Wasn't he—

But then he remembered the two other mares currently playing with his cock and balls and shut himself up.

"My, my," Lily said. She'd been planting tiny kisses along his length as Apple Cobbler moaned, all but writhing across his shaft. Lily's final kiss came off with a quiet pop, a thin line of saliva trailing down to his head. "You seem larger than before."

Horizon shifted in his seat as a few sizeable drops of precum leaked from his tip. "Do I?" he grunted. His heart was already beating faster, the cider speeding through his system. His hips gave an involuntary jerk as Apple Cobbler took his meat and squeezed, as if milking every ounce of pre from his balls to make way for the main course. "Is it...too much?"

"Oh, no," Lily said. "If anything, it's still too small."

And she dove right onto his dick.

Horizon moaned as she deepthroated him, Apple Cobbler shifting down to play with his balls instead. Lily's mouth was divine—somehow, the mare managed to get a whole twelve—no, fourteen inches—down her throat. She had to be missing a gag reflex or something! There was no way that that should be possible, especially with a package as thick in girth as Horizon's.

Yet Lily took it all, her throat bulging as his cock cleared past her tonsils and shoved down her throat. He squirmed as another few drops of pre leaked from his tip to fall directly into her stomach. Her tongue swished along the base, putting even more pressure along a throbbing vein.

"Mmmm..." Lily said. She went a few inches deeper, and Horizon's pelvis thrusted further as the pressure built. His cock slid down her throat, and he felt the head twitch inside of her mouth, flaring against the sides of her esophagus. "Mmmm..."

"I'm gonna—" he choked out. "I'm gonna—"

It came like a flood, pints and soon gallons of hot, steamy cum coming as a deluge through his monstrous cock. To her credit, Lily took it all, her throat bulging with his knot and then her stomach swelling with each spurt of cum that his enormous balls pumped into her.

Apple Cobbler did her part as well, playing and squeezing Horizon's sack until he felt like there was nothing left. She'd milked him dry, it seemed.

Lily's stomach was enormous—bulging with his cum. She pulled back until her lips popped off of his flared head, a few strings of cum still dangling from her mouth.

"Delicious," she whispered. Her hooves roamed up Horizon's chest, her eyes glittering with desire as his cock stayed at full mast, his balls already refilling.

Already unbalanced by the cider and weighed down by Lily's sudden force, Horizon toppled off of his barstool and onto the floor.

Instantly, the room went spinning. He felt a meaty thump on his chest, his balls shaking as though they'd been hit by an earthquake as they landed on the floor between his legs. He could feel them refilling, his magic driving them to produce more cum, more seed, more lust.

"Whoa!"

Suddenly, Horizon's vision went black—and just as quickly, he realized that somepony else had had the same problem as him. Nine inches of respectable stallion meat filled his vision.

"Oh, man! Sorry about that!"

"No...problem," Horizon said woozily.

A stallion stood above him, licking his lips as he eyed Horizon's sizeable cock. He stood with his back legs behind Horizon's head, his forelegs on either side of his eagle-spread legs. "Oh, man..." he said, drooling. "That is one nice motherfucking dick."

"Yours too."

"Mm." Without warning, the other stallion leaned down, his knees bending until he was right on top of Horizon's cock—and then let himself drop.

Horizon let out an 'oof' as the other pony's weight pressed down on him, forcing some of the breath from his lungs. His cock throbbed larger and larger—in protest, it seemed, at the other stallion's presence.

"Fuck," the stallion huffed, his hooves clutched around Horizon's shaft. He rubbed his body feverishly along Horizon's length, his own cock thumping against the bottom of Horizon's chin. "So...fucking...big."

As the other stallion writhed atop him, Horizon, on pure instinct, felt his tongue dart out. The other stallion moaned as Horizon licked around his clearly presented anus, playing and teasing his rear.

"Oh, fuck," the stallion said, humping Horizon's cock. "Oh, fuck—"

Horizon grinned to himself as he continued his rimjob. For his part, he was content to thrust his hips into the other stallion's chest every so often, driving his cock up between the two before sliding it back, easily lubricated by the precum that now coated their fur.

“You like it?” Horizon asked.

“It’s the biggest fucking tool I’ve ever seen,” the stallion groaned, his thrusts growing in intensity and speed. “Oh, my Celestia—how do you handle it? How can you go a single day knowing that you’ve got such a fucking—”

“—big?”

“—unimaginably gigantic cock?” The stallion’s hips jerked, salty precum leaking from his tip at an even faster rate.

"So big," the stallion murmured. "So fucking—oh ffffuck!"

With a final jerk of his hips, the stallion came. White spooge spurted from his tip, laying spurt after spurt of thick, ropey cum along Horizon's much more sizable shaft. Horizon grinned, lapping up at the space around the stallion’s plothole before finishing his rimjob and pulling his head back.

The other stallion rolled off of Horizon's chest, one hoof still resting on his dick. "Man," he panted, "you have one monster of a dick."

Horizon grinned and, unsteadily, got back to his hooves.

His balls were throbbing again, churning with need. Once wasn't enough—the need to fuck was still there. Cider sang in his ears, pushing him to fulfill this desire.

It wouldn't be hard. Any more conservative ponies had long since withdrawn, leaving a chaotic orgy of fucking and sex behind. The scent of bodily fluids filled the air—semen, marecum, and sweat tinged with arousal was apparent in every sniff.

He spotted one group in particular and grinned. There.

He recognized the mare instantly: Marigold. Her eyes were concealed behind a blindfold. She sat, kneeling, before a line of stallions. Each had his cock bared, and as Horizon watched, Marigold leaned forward and took one in her mouth. Her lips suckled around the tip, a thin line of saliva dripping down to the floor.

Some of the cocks were long. Some were thick. Others were already dripping precum onto the floor. Horizon licked his lips, a mischievous smirk crossing his face. None of them had anything on him.

As he approached, he could hear Marigold muttering to herself.

“Not too thick, but long, like some kind of diseased stick. Cum tastes like shit, too. Lemme guess—Hoofshoe?”

“Fuck!” The stallion whose cock she’d last been sucking groaned. “How the hell does she do it?”

Marigold smirked beneath her blindfold. “It’s a gift, babe. Which one of you tiny-schlonged bastards is up next?”

Horizon pushed past a few of the other stallions. When one of them shot him a glare in protest, he merely raised a hoof to his lips, nodded down at his throbbing, two-foot member, and winked. The other stallion scowled.

Marigold felt around, one hoof waving blindly through the air. Horizon sat back on his haunches and let his cock rise up toward his chin. Taking Marigold’s hoof, he guided her forward until her lips were just inches away from his flared tip.

“Mm…” Marigold hummed to herself as she poked and prodded the base of his dick. “Nice and firm. And...thick, too? Holy shit, how thick is this guy?”

Her hooves moved up further until they were barely halfway up his throbbing cock. They stopped just above his medial ring, the circle engorged with blood.

Marigold whistled. “Damn—wait. I know who you are, you fucker.”

She ripped her blindfold off amidst a chorus of boos and groans. “Horizon.”

He shot her a grin. “Am I really that easy to guess?”

“Not another stallion in here who compares. Pity. If one of them could stuff my pussy half as well as you could, maybe they’d have an actual chance with me.”

“Hey!” a stallion exclaimed. “Aren’t you going to get to the rest of us?”

“Hush, babe,” Marigold said. “Mommy’s working. I’ll suckle your tiny dick in a moment, so don’t worry—I’ll gulp down every puddle of cum you can leave for me.”

She turned back to Horizon. “It’s not fair to these little colts to have someone like you around. Drop by later, though—I’ll be sure to give you a good time.”

She fluttered her eyelashes, and Horizon felt heat rising in his crotch. “I’m there,” he gasped.

“Good. I’ll see you then.”

With a whip of her hoof, Marigold slapped the blindfold back over her eyes. “Okay, boys,” she announced, “who’s next?”

“Hey, Horizon! Get over here!”

Horizon’s head jerked to look over his shoulder. Standing on the edge of a circle of several other stallions was Blaze, one of his bright red hooves held high. “Come on!”

As Horizon trotted over, his dick slapping his thighs, he realized that the stallions were all standing with their hooves on their dicks—and in the middle of the circle lay yet another stallion, on his back and with his dick pointed straight into the air. Streams of precum leaked from his tip, covering his groin and upper legs.

“What’s going on over here?” Horizon asked.

“This guy’s got some weird fetishes, man,” Blaze said, chuckling. “He wants us to blow our loads all over his face.”

“Doesn’t sound too weird to me,” Horizon said.

The stallion on the floor moaned as a drip of pre leaked onto his face and trailed down his cheek. “Celestia, yes...cover me up. Cum all over me.”

Horizon glanced down at his bobbing cock. His balls churned in response, and a grin flickered onto his face.

“I might be able to help with that,” he murmured, and stepped up, gently pushing two other masturbating stallions aside to make room for his own throbbing member.

His two hooves stroked the sides of his cock—gently, at first, and then faster, harder, the intensity increasing with each passing second. He’d already cum twice tonight, but he already felt ready to burst with seed.

The stallion beside him was panting, hooves working the head of his dick as pre dribbled onto the cum-lover’s hooves. The stallion on the floor shivered in pleasure.

Horizon looked around. Each of the others seemed deep in concentration, focusing on their own pleasure above all else. Horizon bit his lip and grinned. Maybe he could help them out a bit.

His horn flickered green.

The stallion across the circle from him was the first to notice. “Holy shit—my cock’s growing!”

“Mine too,” another breathed. All eyes went to Horizon.

“What?” he asked innocently, his own cock swelling back to a full three feet. Blood rushed through its veins, his balls expanding until his hooves were spread almost painfully far apart. They drooped low toward the ground as his cock grew past his chin, throbbing and churning with seed. His horn, meanwhile, shone a bright, obvious green. “I’m not doing anything.”

“Sure, you aren’t,” one muttered, sounding amazed.

“Oh, f-fuck,” another moaned. He thrust his hips out as his balls reached the size of grapefruits. Thick, ropy spurts of cum shot out from his tip, landing right across the cum-lover’s mouth.

“So good,” the stallion on the floor moaned. He writhed on the ground, opening his mouth to let every rope of spooge land on his tongue. “I—I need it—I need it all—”

Horizon grinned, his head still buzzing from the alcohol earlier. Almost without him realizing it, the glow around his horn intensified—and all over the room, ponies gasped with wonder as their assets and equipment started to swell in size. Mares shuddered with pleasure as their mammaries grew, spilling over their laps and leaking milk over the floor. Stallions all around cried tears of wonder as their cocks grew to a full foot—no, a foot and a half in length, with heavy, churning balls to match.

He watched out of the corner of his eye as a mare, impaled on a stallion’s length, writhed and twisted as a green glow danced beneath her groin.

“It’s...it’s growing!” the mare said, her eyes widening.

“So big,” he could hear the stallion pant. “So fucking—”

“Get it out!” the mare screeched. “Get it out, get it out—I’m going to fucking pop with that thing inside me!”

Horizon chuckled to himself as the stallion sputtered something out in response before jerking backwards. The mare fell to the ground with a grunt, the stallion’s growing cock—now a full foot and a half if it was an inch, with balls to match—smacked up against his chest.

The mare turned back over her shoulder—and her eyes dilated. “Oh, fuck,” she breathed, her voice just barely audible over the din of sex and rutting all around them. “Oh, my.”

She tackled the stallion, already lapping eagerly at the sides of his cock. Horizon snickered and turned to look elsewhere.

Two stallions were sixty-nining alone in a corner—or were doing their best to, at least, finding it hard to suck when they had to lean further back with every stroke, their oversized and growing balls pushing their torsos even further apart on their own. Two mares, just feet away, seemed to be scissoring as though in heat, feverishly grinding their crotches against one another—a task, though, that only grew more difficult with each passing second as their crotchtits swelled to the size of grapefruits and then soccer balls.

Off toward the center of the room, a mare let out a loud moan of pleasure each time she was pounded—from both in front and behind. Two stallions, balancing on their back hooves, had her spitroasted on their swelling cocks. The mare’s ass bounced in the air, her swollen cheeks jiggling and slapping against the stallions’ groaning balls as they thrust into her again and again and again. The sound of wet, slapping flesh and lip-biting grunts filled the air. Horizon could almost see the outline of the rear stallion’s cock bulging through the mare’s stomach, his growing shaft buried balls-deep in her tenderized pussy.

Horizon turned back to his own equipment as his cock hit three and a half feet: a monstrous forty-two inches. He groaned, his hooves speeding up as he masturbated as he’d never masturbate before. The air sang with musk and sweat and pure, unadulterated sex. He could no longer even hope to encircle the entirety of his member; by now, his balls scraped along the floor with each jerk of his hopelessly aroused crotch.

The stallion on the ground beneath him opened his eyes—and found himself face-to-face with Horizon’s gargantuan shaft. His pupils dilated, his jaw dropping as that enormous shadow fell over him.

“Sweet Celestia,” the stallion whispered. “I—”

“Yes?” Horizon murmured through clenched teeth. He was so close—he could feel the pressure building in his balls already.

“You’re going to drench me with your cum,” the stallion said. “I want you to fucking drown me in it. I want—I want to be covered with every single drop and gallon you have to spare. F-f-fuck me, but I do.”

That sent Horizon over the edge.

At least two other stallions seemed to have gotten off to the cum-lover’s worship, but Horizon’s release overshadowed them both.

Horizon’s cock exploded.

Waves of cum washed from his tip, splashing out on the floor and covering the stallion on the ground from head to toe. Spurt after spurt burst from above Horizon’s hips, forcing him backward from sheer inertia, and painting the stallion a thick, creamy white.

The stallion moaned, his own cock contracting and spurting a—much smaller—few ropes of cum itself. “Oh, gosh,” he said, Horizon’s deluge of cum squelching above and beneath him. “Oh, yes.”

“Fuck, Horizon,” Blaze said from beside him. “That is one monstrously huge dick.”

The alcohol’s buzz rose to a fevered pitch. Horizon glanced into Blaze’s eyes, a wild smile creeping across his face.

“Maybe,” he said slowly. “But you know what?”

Blaze blinked. “What?”

“I think it could be even bigger.”

Horizon’s grin spread as his horn lit up once more. A familiar green aura sprang up around his cock, and, beneath Blaze’s stunned expression, Horizon’s package began to grow once more.

Horizon teetered on his hooves, the weight of his massive member pulling him to the ground. He collapsed to all four hooves—and felt a shiver of arousal when he felt the base of his cock touch the wooden floor. His balls throbbed and churned, already having produced another flood of cum. His flared head pushed up beneath his chest, bobbing eagerly as precum dripped uncontrollably onto the floor.

“More,” Horizon grunted. His shaft had passed four and a half feet—an insane fifty-four inches, as long as a pony was tall—and showed no sign of stopping. Five feet. Five and a half—

A shiver went up his spine as he felt his cock push against the ground once more—and then stop in place, pushing up into his stomach as it continued to grow. His veins throbbed, his medial ring rubbing against his chest as his cock grew and grew and grew.

Six feet. Seven feet. Horizon’s body was in the air now, fully supported by his gigantic stallionhood. His hooves waggled helplessly as his cock continued to grow, his balls pushing out behind his legs and swelling up above his back until they felt like they were ready to explode from the volume of cum.

Several other ponies had noticed by this point, some even giving cries of alarm as Horizon’s cock pushed into and toppled a nearby pair of chairs. Horizon, however, was fully caught up in his own pleasure and size—he wanted more. He needed more.

“Bigger,” he grunted. “Bigger. Bigger!” Eight—no, nine feet. Ten feet, now, his balls towering above a normal pony’s head, and with a girth wider than a three barrels stacked. Twelve feet—and a table was crushed beneath his massive meat, unable to bear the immense weight of Horizon’s throbbing, growing stallionhood. Pre leaked from his tip, forming a puddle of cum on the floor as though it were the remnants of a rainstorm—and still, Horizon grew on.

Ponies huddled against the walls as Horizon’s cock swelled further, pushing thirteen—fourteen!—feet. Its radius alone was now taller than a pony in height, and it dominated the vast majority of the bar.

Finally, it stopped at fifteen feet, though whether Horizon’s spell had given out or whether the pleasure of such a monstrous package had made it too difficult to focus made it impossible to say. Horizon was lost in his own size: His shaft filled his vision, his legs stretched wide over his titanic shaft. It was hard to believe that it even belonged to him at this point—if anything, some corner of his mind decided, he belonged to it.

It throbbed powerfully, as intense as though it were a living being in itself. It was the most beautiful thing that Horizon had laid eyes on.

He whimpered. His hooves—his short, stubby hooves—were far too short to even begin to reach a fraction of his length. His balls, though, felt fit to burst, the volume of cum building inside far too much for even his monstrous nuts to contain.

His ear twitched. “Fuck,” he heard, out of the corner of his eye. “Oh, f-fuck, that’s fucking insane.”

“H-help,” Horizon whimpered. He couldn’t even see the speaker—his massive meat filled every inch of his vision. “I—it needs to cum. Please, please help me cum.”

“Oh, Celestia,” somepony whispered—and Horizon jerked as his enormously sensitive shaft registered a slight pressure right above his medial ring. Then he felt two such pressures—hooves, he realized. A pony was using both hooves to masturbate him.

He heard hoofsteps all around him. “Holy shit,” another—a stallion, he thought—breathed. “I just—”

“P-please,” Horizon whispered. “I need to cum.”

He stretched out his hooves, but they waved helplessly in the air, beating senselessly against flesh too large and too mind-blowingly thick to even feel it. It was like a fly nipping at a workhorse, and with every throb of blood through his shaft, he felt his need and desperation grow.

“I need,” he gasped. “I need—”

He could see his cock slowly throbbing, like an animal in a cage, poised and coiled and ready to strike. Each throb lifted him a tiny bit higher off the ground, the churning in his balls reaching angry, swirling heights that he’d never felt before. It almost hurt, the absolute fullness of cum within his balls straining and pushing against his sack’s thick walls.

All around him, the room had gone silent. The orgy, the party, had ground to a complete halt all around him. Those first two hooves barely helped—they weren’t even close to what he needed. A few more careful prods teased his tip, each drawing a whimper from his chest.

“Please,” he begged—Celestia, Luna, anypony who would listen to his prayer. “Please, help me cum. Oh, please, please, please—”

He felt another a soft, moist weight against his ring, two feet wide as it was—somepony was licking at it, nipping his cockflesh gently between their teeth. More quiet murmurs and hoofsteps filled the room. Horizon moaned as he felt the first puddle of precum dripping down the sides of his cock—everypony, it seemed, wanted to investigate this new, enormous masterpiece of a dick.

Wet, meaty smacks filled the air as ponies, driven by nothing more than lust and alcohol, began to throw themselves against the sides of Horizon’s titanic shaft. If Horizon could have seen the looks in their eyes, he would have called them possessed—but as it was, he was incapable of thinking beyond the wall of swollen, throbbing bulk that filled his vision. A new shudder of all-encompassing pleasure shivered up his spine, and he pushed his chest against his base before drawing it back and doing it again. And again.

The pressure came from all sides—ponies, both stallions and mares, vigorously humping his massive tool. The bar was no more than a mess of sweat and sex by now, the throb of the bass overcome only by the grunts and moans of the ponies humping Horizon’s cock. Each reverberation of the speakers set vibrations through the floor, travelling through the earth and masturbating Horizon from below even as the crowd fucked and drooled over its enormous bulk from the sides.

Horizon moaned—and then paused. Some small part of his mind recognized that something wasn’t right. His cock—his swollen, titanic, gargantuan rod—was vibrating, throbbing so hard that the floorboards themselves shook beneath its resonating flesh.

And then he felt it: that unmistakable, building pressure. He could hear the cum in his cart-sized balls, an ocean of spunk churning in their unfathomable depths, swelling beyond containment and straining for release.

His chin was pushed a few inches into the air from its resting position on his base, and Horizon’s eyes widened: He could see a knot forming right beneath his chest, his veins swelling and throbbing as the pressure built. He was ready to burst—no, explode—

Horizon detonated.

With a roar like thunder, a crash like a tsunami, and a groan like an earthquake, a river of cum burst from his cocktip. His urethra—now large enough for a pony’s head to easily fit through—blasted an unending stream of pure white into the air. He thought that he could hear something shatter, something crack, but he paid it no mind. His whole world was white: infinite, white pleasure that burst through his every nerve and organ like wildfire—

—ponies were shouting, yelling, screaming in orgasm as they came with him—

—white light was spilling in from the outside. But wait, some part of Horizon’s mind thought, moonlight can’t come in if there aren’t any windows—

He rode the orgasm out like a bucking bull, cumming and cumming again as he’d never come before. A scream of pure pleasure ripped itself from his throat, rubbing his esophagus raw as he demanded more and more and more and more—

And more came.

The room was painted a thick, creamy white. Everypony inside looked as though they’d been blasted by a snowstorm, with Horizon’s slushy spooge dripping down their faces and entire bodies. His balls churned behind him, slowly deflating as he came wave after wave after wave of spunk. Five minutes passed before he began to feel the flood tapering off.

As the orgasm finished itself off, Horizon felt his mammoth-sized member shrinking beneath him, collapsing, it seemed, under its own weight. His mind was blank, his thoughts unable to even process the sensations that had seemed to pierce to his very soul.

His cock shrunk down further—soon enough, his hooves could once again touch the ground, his balls only slightly taller than his flanks. A long, shuddering sigh shook his body as his softening member bobbed up to smack against his stomach, his nuts twitching as their stores were completely empty of spooge. Thick ropes of cum still trailed from his head and across the floor, reaching toward…

Horizon’s eyes drifted up to the moonlight seeping into the room. “Oh,” he said in a small voice. “I don’t remember there being a window there.”

The timber was cracked, the sides of the fissure painted with white, dripping semen. The hole itself was a good five feet wide, the wood splintered all around it. Horizon’s eyes drifted back down to his cock—and the noticeably huge strand of cum that trailed out of the “window” and out of sight.

“Oh,” he said quietly. His eyes rolled up and, with a final gasp, he passed out.

Chapter 7: A Growing Feeling [Macro] [Cum Inflation] [M/F]

A deep breath escaped Horizon’s chest as he leaned back tenderly onto a haybale. His hooves throbbed like a metronome as he tilted his head back, sighing and letting his eyes flicker shut.

He’d been hard at work all day. The farmhoof chores he’d been putting off to fulfill his bet had come back with a vengeance, and that was on top of the community service hours he’d had to do to fix up the bar. He hadn’t actually touched any of the wooden planks that he’d used to board up the hole he’d made -- being a unicorn came in handy when it came to manual labor -- but he could swear that his horn had splinters just the same.

A familiar weight on his chest stirred him back to wakefulness. After the events of two nights back, most of the ponies had lost anything resembling a libido, and probably wouldn’t get one back for another few days. Though it may have looked it, Horizon hadn’t been solely responsible for the massive flood of bodily fluids on the bar floor.

He exhaled, savoring the brush of warm air against the head of his sagging cock. For him, however, life was business as usual. Whatever he’d done to his stallionhood had let his reserves spring back within a mere half a day. Admittedly, that was notable for him, as he usually had to stop to beat off at least once every two hours with his balls swollen back to their current soccer-ball size. Even with that momentary respite, however, he’d soon found himself back on the farm and, somehow, alone with his monstrous sex drive.

The tip of his hoof brushed against his medial ring, which was itself almost wider around than his leg. He shivered, a spark going up his spine. His balls throbbed in a sympathetic reaction, their refreshed contents eager to be drained once more.

It was obvious that he needed to let off some steam. Even so, he was too tired to be creative, and there was no harm in keeping things simple. A tired smirk spread across his face as he slowly ran his hoof up and down his shaft, the other resting on his nutsack. He didn’t need anything freaky or magical. He just needed some sweet, sweet release.

Horizon closed his eyes and went to town.

As his hoof met the flared head of his member, he pictured Apple Blossom.  He saw her in his mind's eye: the soft curves of her flank; the slight lilt of her lips; the flutter of her eyelashes, and the inevitable squeal of pleasure and surprise when she would look down at his rock-hard, throbbing stallionhood.

By some quirk of cosmic luck, ever since word of his  “enhancements” had gotten around the farm,  he hadn't caught a single glimpse of Blossom, whether on the farm or off.  Admittedly, their schedules didn't quite mesh up, which was why he had admired her from afar.  Ever since he had tried out his spell out his package, though, he had been seeing so much less of her that it seemed like she had almost been avoiding him.

He waved the thought away with a snicker.  No way; it had to be coincidence.

But that wasn't important right now.  What was important was his dropping erection, and the feel of her imaginary rump beneath his hooves.  Already, his monstrous shaft was oozing precum, making a sizable puddle on the barn floor.  His testicles throbbed as he massaged them.  He bit his lip, imagining the feel and shape of her cheeks hotdogging his massive member.  Idly, he wondered what she would grow around if she had the choice.

He would give it to her if she asked, of course.  He had already been more than generous with his spell around the farmhand village, but for Apple Blossom, there were few things that he could see himself refusing to do…especially if it involved his " area of expertise."

Maybe she wouldn't go for the ass.  It was a little too obvious, he thought.  Maybe she would go for her mammaries -- big boobs were “in” like never before, he remembered reading in some trashy magazine -- or perhaps she would think of something else.  He'd heard of things like mares with big lip fetishes, or fetishes for big, smelly hooves.  Somehow, though, those didn't seem right.  He didn't find anything wrong with them, really, but it just didn't seem to fit with Apple Blossom.

His mind drifted.  The speed of his stroking increased, until he was vigorously pumping away at his throbbing, dripping shaft.  He gave a short grunt as a spurt of pre splattered on the ground beside him, a sudden burst of heat flaring up in his groin.

What if there was something that she wanted of him that he couldn't grow?  He frowned.  So far, his grow-me-up spell had worked on all the subjects but his friends had bothered to put in front of him.

As he slowed his stroking, making small circles around the head of his member, a thought occurred to him.  All of the fruits, vegetables, and animals that he had used the spell on had grown up wholesale; that is, the whole thing had grown.  When he used it on ponies, though, only certain parts grew: a rump, a pair of breasts, a cock and balls.  Had he ever grown a whole pony?  He didn't think so.

Unbeknownst to Horizon -- as was so often the case -- a light green glow had already sprung up around his horn, flickering with each lustful grunt.  Slowly, the green magic spread out over his shoulders, down his torso, and soon over his entire body.  He didn't notice; his eyes were closed, teeth biting down hard on his lip as he imagined riding a giant-assed Apple Blossom.

He gave a soft moan as the green glow tightened around him, spreading a familiar warmth through his body.

His muscles felt tight, his entire body throbbing and twisting with the blood in his cock. With each inhale of breath, his whole body felt tighter; with each exhale, it felt looser than ever before. Horizon grit his teeth, feeling strength surge through his arms as he tightened his grip on his stallionhood, his gasps grunts and gasps coming more and more frequently now -

Wait. He hadn’t made that gasp. He slowly opened his eyes.

There was a mare standing in the doorway of the barn. Her coat was a bright, cheery yellow, her Cutie Mark a blur of red. He squinted, wondering why she seemed so far away...and why he seemed to be staring down at her, even though he could’ve sworn he’d been sitting on the floor. Had he moved up to the rafters at some point?

As if irritated at the pause in stimulation, his oversized cock throbbed once before giving off a spurt of precum. Horizon sputtered as the warm, cloudy liquid splattered over his snout, a bit dripping down from his forehead and onto the floor. Wiping the pre off wasn’t hard - though it was a bit sticky - but when he glanced down to see where the drops had fallen (because as much as he thought he’d be used to it by this point, seeing the massive puddles he could make of pre alone had never failed to drive him wild) he noticed that his flanks were still planted quite firmly on the barn floor.

When he looked back up, the warm pre still dripping from his snout, two things occurred:

First, he realized that the top of the haybale he’d been leaning against was now level with his chin.

Second, the Mark on the mare’s backside resolved into a pair of bright pink flowers. A pair of very familiar flowers.

“Um,” Horizon said.

“Um,” Apple Blossom said. “I...guess this is a bad time to get some supplies.”

“No - wait!” Horizon stumbled up onto his hooves - and the floorboards creaked and groaned beneath his newly-massive weight. His cock slapped loudly against his thighs, already drowning the haybales beneath his belly with pre. She took a step away, and he shrunk back. “I mean… Uh. One sec.”

One shrinking spell later, and he was nearly eye-to-eye with Apple Blossom. His monstrous cock and balls were even a bit smaller as well, though it might have been too much to ask him to admit that some part of his mind had done it on purpose.

He flushed as she stared at the ground. “I’m sorry,” he blurted. “I didn’t realize - I didn’t think that anyone was around. I’m really sorry.”

“Don’t be.”

“I wasn’t - wait.” He stopped. “Don’t...be?”

When she looked up again, her own cheeks were burning a brighter red than his. “It’s...fine,” she said. “I should’ve knocked or something.”

“Knocked to enter the barn,” he said. “Right.”

She chuckled, and he bit his lip, trying to hold in his chuckles as well.

“So,” Blossom said. “I have a bit of a confession to make.”

“What?”

Her hoof traced slowly through the sawdust on the floor. “When I first heard about how you were using your new magic, I felt...confused. I didn’t realize that you could use it on ponies, you see.”

“That makes two of us,” Horizon said. When Apple Blossom stared blankly at him, he chuckled uneasily. “I mean, I didn’t expect it either. Complete surprise. Really.”

A soft smile touched her face. “It shocked me too,” she said. “I guess I never really expected myself to be so much of a...well, prude. When I heard about your new spell, my first instinct was to stay away from it. When I heard about the ponies you were seeing, my first instinct was…”

Horizon gulped.

“...to stay away from you.” Apple Blossom stared at the floor.

“I, uh.” Horizon licked his lips. “I didn’t think - “ No, of course he didn’t think. He didn’t think at all. Maybe he liked Apple Blossom, yeah, but maybe she liked him back. And he just never even asked her out or anything, just started fucking everything in sight. Stupid, stupid, stupid -

“But I changed my mind,” Blossom blurted out. “I...didn’t feel right, judging you like that. It wasn’t like you’d made any promises to me, and…” She sputtered for a moment and then looked up at the ceiling. “Ugh! And maybe I kind of liked you, okay?”

“Well,” Horizon said. “I, uh.”

Go on. Say it, you moron.

“I guess I kind of liked you too,” he said.

There. Done.

They were both quiet for a moment.

“Another thing that I thought about earlier,” she said, “was that bet I heard you made.”

“Oh.” Horizon blinked. “Right. That one.”

“Every pony on the farm,” Blossom said slowly. “Sure, I bet you were drunk, but from the sounds of it, you’ve been keeping up to that vow.”

“Heh. I guess.”

“Every pony,” she said, taking a step closer, “except one.”

Horizon swallowed. That look in her eyes, that sway in her step, that lift of her tail -

“Well,” he said as she took another step. “I’m sure there’re some ponies that I haven’t - I mean, I don’t know if I - and it’s not really that important, and - “

She lifted a hoof to his mouth and shushed him. “So,” she said. “You can make whole ponies bigger?”

“I...I guess,” he said.

She seemed to consider that for a moment. When she let her hoof fall back to the floor, Horizon noticed it was trembling.

“Good,” she finally said. “Then how about...me?”

And then he was on the floor, with her straddling his chest and her lips pressed against his. And his horn was flickering green, and he wasn’t even thinking about it and before he knew he’d already cast the spell.

And her weight on his chest was already heavier than it’d been just a moment ago.

Apple Blossom pulled away from the kiss with a flourish and looked right into his eyes.

“I was an idiot,” she said, panting, “for not doing this sooner.” She glanced back at his cock, which - by this point - had already reflexively grown back to slightly more than its usual length. She smirked down at him, and he flushed. “And it looks like we’ll have to take care of you as well.”

His cock was throbbing, and his legs felt like they were on fire. Horizon gasped as Apple Blossom slowly ran her hooves down his length, planting tiny kisses down on each and every inch. His hooves twitched up in the air, and a shiver went down his spine. He’d always enjoyed sex before, but this, with Apple Blossom, seemed more intense than all the rest put together.

The instant he got his senses together, though, he went to work returning the favor. He leaned up and kissed Blossom’s thighs, making sure to suck hard on her smooth, bright coat. She gasped on top of him and he grunted as her weight suddenly increased on his chest. Her legs grew even longer until they were planted directly on the floor - still bent at the knee - and her pussy grew until it would have dwarfed any normal mare’s.

Now that, Horizon decided, was a challenge. He grinned and got to work.

He ran his tongue along her thighs until he reached her outer lips, and slowly lapped at the juices already leaking there. He gasped as she took the tip of his head in her mouth, her tongue circling around his slit. Precum was already dribbling out of him in generous amounts, and he could imagine it filling her mouth, bulging her cheeks, dribbling out onto the floor -

He redoubled his efforts and stuck his tongue deep inside Blossom, wrapping his lips around the clitoris and sucking, at first gently, and then harder, his head swaying from side to side as he teased her. Blossom shivered, her legs tightening around Horizon’s head - and then pushing him down even further as a green aura surrounded her, growing her body even further.

Horizon let his head spring back with an audible squelch. Blossom’s sweet, tangy taste still ran down his chin, her musk nearly overpowering to his every sense. He looked up at her flank - an enormous, incredible flank, already the size of Lily’s overgrown ass, and yet still perfectly in proportion to the rest of her body.

And what a body it was. She had to be nearly twice his size now - as tall as Celestia, but as thick and as powerfully muscled as any earth pony, with a flank and legs to match. She took a break from her own work on his cock - his head coming free from her tight, teasing lips with a pop - and looked back at him.

“You like that, little stallion?” she asked, fluttering her eyelashes.

“Oh, yes,” Horizon said quickly. “I mean, oh gosh yes right there - “

Blossom had already turned back to his cock and planted her lips directly on the tip - but she hasn’t stopped there. Horizon could feel his shaft’s head twitching inside of her mouth as he filled her, her massive body rocking back and forth as she descended past the tip and directly over the head - and further still.

The green aura returned, and Horizon winced as her weight redoubled. It almost felt like she was crushing her chest, her dripping mound teasing him with each gasping breath he managed to take. For its part, though, his loins didn’t seem to mind at all - if anything, his tool had become even more swollen with fluids and arousal, his entire body seeming to thrum with the beat of blood through his crotch.

Horizon bit his lip, his head tossing back as he struggled not to cry out. Blossom had managed to take not just his entire head, but also his entire shaft into her mouth - all the way down to the base. He swear he could see her winking at him as her tongue roamed its way over his churning balls, his massive cock filling every inch of her mouth - but not even quite reaching to her throat. He could hear her gulping down every spurt of precum he produced, and imagined it going down to fill her massive, growing belly. It’d be like a drop in a bucket.

And that only made his balls produce even more.

He hardly even noticed it when he came the first time, his thrusting hips meeting the sweet warmth of her lips as his cock, never one to be outmatched, finally grew out to meet Blossom’s esophagus. He could feel her jaw widening, shifting to adjust his incredible length...and then his head flared, and he was groaning, snorting, and thrashing as cum flooded out from his groaning balls to fill her.

He would have noticed - but he was busy with his own task, his hooves massaging her enormous thighs as hard as he possibly could as his tongue dove right back in, attacking her pussy. He could feel her vagina winking against his chin, could feel the shifting of pure, powerful muscle against his tongue as it wiggled against her clit. He rubbed his snout against her outer lips, smelling, feeling this pure scent of her, and then she was moaning, her hips bucking into his chest as her tail swished over his face. He lapped up as much of her marecum even as she gulped down his, making sure to get each drip of sweet, sticky nectar even as it flooded all over his torso.

“Mmff,” she moaned, her lips pulling away from his cock with a wet pop. “Salty.” She grinned at him, his sticky ejaculate still dripping from her lips in long, thick ropes.

And then she shifted her weight, and her head was directly above his. He grunted, all the air being knocked out of him with the sudden shift - but his cock was already hardening again, rising up and prodding against Blossom’s slightly swollen belly.

“Aw, geeze,” he said. “Usually…”

“What?” She blinked at him, but then glanced down at her stomach and chuckled. “Oh, I see how it is. I’ve heard how you leave some of your mares as big as balloons by the time that you’re done.”

“It’s not fair!” Horizon said, doing his best to pout. “I must’ve filled you with almost two gallons of cum, but it hardly even made a difference!”

Blossom leaned in close to him and let her breath wash over his chest, her massive muzzle filling his entire field of vision. “Maybe I’m just too big for that now.”

“Maybe,” Horizon said stubbornly. He crossed his hooves over his chest and huffed. “I can just grow my package bigger.”

“What, and try to do to me what I heard you did to the bar?” She snickered as his cheeks turned red. “I don’t think so. From what I’ve heard, you couldn’t even move. It wouldn’t be any fun for me to try and - “

She nudged his hooves to his sides and nuzzled against his chest. He could feel her immense weight over him, could feel the warmth of her body as the hairs of her sagging underbelly brushed against his towering cock.

“ - play with you like that.”

“And if I wanted to be played with?” he offered.

“Still boring,” she said. “Come up here and join me.”

“Up - what?”

“Grow up, Horizon.” She snorted and tossed her mane over her shoulder. “Literally. I’ve never felt so...powerful.”

“Powerful?”

“I’m bigger than Celestia herself! Gosh, what a rush.” She held one oversized hoof beside his hoof and prodded him slightly. “You were like this when I came in. Didn’t you feel it?”

“I...guess I was interrupted,” he said. “What does it feel like?”

“Like a million bits,” she said. “Like there’s nothing in the world that could bring me down. I’ve never felt stronger, more intense, more aroused - “ Her cheeks flushed for a second, but after a moment, she chuckled. “Gosh, I even feel too big to be embarrassed about it.”

“That good, huh?” Horizon asked. She nodded. “Then I guess I’ve got my choice made for me, huh?”

“You betcha.” She wiped a milky strand of cum from his face and flicked it on the ground. “Now, let’s see how big a pony can get.”

Horizon closed his eyes and reached for his magic.

It had been easy before, when he’d called on it unconsciously, and it came just as easily now. He felt the magic flow into him, warming his limbs, his torso, his stallionhood. His heart beat loudly in his chest, and he could feel his cock slowly swelling even farther as the magic flew through his veins. He groaned, shifting his weight as his bones creaked, his muscles pumping and swelling, his shaft heavier and heavier atop his balls.

By the time he opened his eyes, he was meeting Blossom’s. She was still straddling him, his shaft now planted firmly in her pussy, but this time, he could see the bulge it made in her stomach with each tiny motion; could see her slowly swelling stomach as precum flooded into her. This time, she had her hooves hanging around his shoulders, her muzzle rubbing against his own.

“How’s it feel?” she asked.

Horizon glanced down at his hooves. Without even thinking about it, he let it fall to the floor - and grinned as he felt and heard the floorboards shake and creak in response.

He cracked his neck, looking up at the rafters - which, all in all, didn’t seem so far away anymore - and inhaled, feeling the wind rush into his larger, more powerful lungs.

“Twice the size of Celestia,” he muttered, arousal flooding through his head like a wildfire. “Fuck.”

“Only if you’re ready,” she said. She leaned in close and nipped his neck, slowly working her way up his neck to his chin and finally his mouth. He felt his lips open to hers and tasted her tongue, felt her hooves holding him close, felt his hooves crawling up her hips, up her back, tightening their grip until he could feel his own cock-bulge pushing against his chest. He could feel her tongue dueling with his, could feel the sweat dripping down his chest as his head twisted and swayed, trying to force his mouth even further inside of hers -

And then he opened his eyes, and he was looking down.

Blossom’s lips came off of his with a pop. She was breathing hard, her chest heaving up and down. It took her a moment to realize that she was looking up.

“Twelve feet not enough for you, you size queen?” She was grinning the biggest shit-eating grin he’d ever seen.

“Guess not.” Horizon shrugged, and then almost shivered as he almost felt the pure power coursing through his limbs. Fuck; looking down on her now, he could swear that he’d be nearly thirteen feet at the shoulder if on his hooves. As it was…

He looked back up to the rafters. As it was, his head was already a good nine feet off the ground, a whole three feet above Blossom’s. Goddesses, but if he were only two feet taller, she’d be no taller than a foal to him - and a normal pony even smaller still. He snickered as he realized that Plow couldn’t be taller than a single one of his swollen testicles at this point. He snickered even harder when he started to imagine what Plow would look like with all of the cum contained in just one of those testicles sloshing around in his stomach.

“Something funny?”

“Just a joke I remembered,” Horizon said. He put a hoof around Blossom’s head and held her close to his chest. His hips slowly pumped up and down, sliding his five-foot cock slowly up and down her pussy. She moaned with each pump, his cockhead clearly visible through even her enormous abdomen.

“Wanna...share?” she grunted out between thrusts. He could feel her getting wet again already, though whether that was due to her own juices, his overflowing pre, or both, he couldn’t tell.

Horizon recalled his mental image of Plow, muscled belly swollen outward with so many gallons of cum that he’d more than doubled in weight.

Oh, yes. He had plenty to share. But he wasn’t big enough yet.

“You,” he grunted, bringing back his magic, “have no idea.”

His bones started creaking again, his limbs growing longer and thicker as his head grew farther and farther away from the floor. He held onto Blossom tight with both hooves, keeping her impaled on his cock as he thrusted into her again and again. The floor shook with each thrust, his hips crashing down to the floor with incredible force. The very wooden beams around them groaned and squealed as two tons of heavily endowed stallion collided with the ground again and again.

And Horizon kept growing.

He reached eighteen feet, then twenty. By now, Blossom really was a foal to him, her small - yet still incredibly large, relatively speaking - body teetering back and forth on his lap as his cock slammed into her again and again. Her belly was swelling even further now, gallons and gallons of pre pouring out from Horizon’s tip as his balls contracted into his body, getting ready to release the entire load at once.

“More,” Apple Blossom panted, her tongue hanging out of her mouth. “Harder. Bigger. Not big enough!”

And Horizon obliged.

His horn brushed the tips of the rafters, nearly twenty-five feet off the ground. He groaned as he moved to simply sliding Blossom’s taut body up and down his shaft, using her as nothing more than a cocksleeve. Her eyes nearly rolled back in pleasure as he fucked her more thoroughly than anything had ever been fucked, her moans nearly drowning out his needful, growling grunts.

By the time his head hit the roof, all restraint was gone - and the ocean flooded out.

Blossom screamed, though whether in pleasure or pain Horizon couldn’t tell (though some part of him genuinely hoped and prayed for the former), as enough cum to fill barrels and barrels of cider roared through his cock and exploded out the other end, escaping to the one place that it could find: Apple Blossom’s womb.

Blossom squirmed, speared on the tip of his cock as her stomach bulged, swelling with every passing second as more and more of Horizon’s seed flooded into her. He could hear it churning, sloshing in her belly with each twitch of motion. Her stomach swelled beyond anything he’d ever seen, until it actually pulled his cock forward and down with its sheer weight.

To her credit, though, not a single drop spilled forth from her pussy, tightly clenched around his titanic cock as she was. Instead, her stomach only swelled further until it was larger than the rest of her body. By now, she was just over the size of a single one of his testicles.

It was at this point that that same concerned corner of his mind regained some manner of control and managed to summon up Horizon’s magic one final time. Apple Blossom moaned as the green aura surrounded her once again, her marehood convulsing wildly around Horizon’s shaft as she, too, began to grow.

“Mmff,” Horizon grunted, grinding his cock - and Apple Blossom - against his chest, trying to milk out every last drop of cum. Now, though, Apple Blossom had started to outpace the flood of cum, her body swelling larger even as her stomach seemed to shrink in size. Horizon barely even noticed the shift in weight, but soon enough, she was within a head in height of his own size, and the aura had spread to include him too.

The roof put up a good fight, put it gave up after just a few seconds of Horizon’s horn straining against its reinforcements. The two giant and growing ponies burst through the roof with a crash, their muzzles by now locked together again as the final throes of Horizon’s orgasm rode themselves out.

Horizon finally groaned and opened his eyes. For the first time in over a month, his balls felt completely and totally empty; his stallionhood completely and utterly limp. But, for some reason, his entire body felt suffused with a warm glow, his muscles sore but relaxed. He startled as he felt something pushing closer to his chest.

“Now that,” Apple Blossom murmured, snuggling in closer to him, “was the fucking of a lifetime.”

They’d crashed through the barn, evidently, and kept right on growing. Down beneath Apple Blossom’s right flank, Horizon could just barely make out the wreckage of the loft; beneath his own, he could feel the haybale piles if he just shifted around a little bit. It was strange, then, that most of what he could feel was limited to Apple Blossom’s body pressed against his, her mane playing against his chest as she breathed softly in the afterglow.

“Absolutely,” he breathed. He could still see - and feel - her stomach bulging out with cum. It wasn’t swollen to the insane size it’d been before, but it was still full to the point of apparent pregnancy, the sloshing, warm cum easily audible as she shifted against his side. “Unless…”

She smirked sleepily up at him. “Same time next week?”

Horizon took a deep breath. “...Sure. But first, we might need to find a new - “

“The barn!”

Both giants glanced down at the source of the tinny, almost fragile-sounding voice. Tiller stood at the center of the barnyard, a set of muddied overalls on his chest, a bucket at his side, and an expression of complete and utter horror on his face. More and more ponies were beginning to pop up out of windows all around the farm, both to see the destruction and to see Tiller’s impending meltdown.

As Tiller began to hyperventilate, Horizon turned to Blossom and chuckled, the ground shaking as he shifted his weight. “Think we’re going to need to help clean up?”

She punched him on the shoulder. “Only if you want to keep your job.”

“So that’s a maybe,” he said, and held her closer.

Return to Story Description

Other Titles in this Series:

  1. Horizon's Special Talent

    by Ebony Horn
    8 Dislikes, 9,794 Views

    Horizon has a green hoof—his magic makes things grow. He'd never thought to try it on himself before, but a curious experiment on his own biology shows him a world of pleasure he'd never imagined.

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    1 Chapter, 3,376 words: Estimated 14 Minutes to read: Cached
    Published Jul 21st, 2013

  2. A Drunken Vow

    by Ebony Horn
    21 Dislikes, 24,882 Views

    During a night of drunken revelry, Horizon swears to his friends that he can nail every eligible pony on Cherry Dun Acres. Luckily, he's got an ace up his sleeve—a two-foot package and a signature spell that makes anything bigger.

    Clop
    Complete
    Romance
    Comedy
    Slice of Life
    Sex

    8 Chapters, 39,132 words: Estimated 2 Hours, 37 Minutes to read: Cached
    Published Jul 22nd, 2013
    Last Update Apr 21st, 2015
A Drunken Vow

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